                               
                                                                                         Research data for 
             
                                                          Tidal influence on seismic activity during the 2011-2013 El Hierro volcanic unrest

                                                         Luis Miguelsanz (1), Pablo J. González (2) (3), Kristy F. Tiampo (4), José Fernández (1)

                                                (1) Institute of Geosciences (IGEO), CSIC-UCM, Calle del Doctor Severo Ochoa, 7. Facultad de Medicina 
                                                        (Edificio Entrepabellones 7 y 8, 4ª planta), Ciudad Universitaria, 28040-Madrid, Spain.

                                                (2) Volcanology Research Group. Department of Life and Earth Sciences. Instituto de Productos Naturales 
                                                     y Agrobiología (IPNA-CSIC), 38206 La Laguna, Tenerife, Canary Islands, Spain.

                                             (3) COMET. Department of Earth, Ocean and Ecological Sciences, University of Liverpool, Liverpool, L69 3GP, UK.

                                             (4) Cooperative Institute for Research in Environmental Sciences (CIRES), University of Colorado Boulder, USA.

                                                                               


Introduction

This set of files contains data supporting the tables and figures featured in the journal article.
 
File Ts01.xlsx shows data from the earthquake cluster C1 defined in the manuscript, as well as tidal stress phases and amplitudes obtained for each event using the methodology explained in the text. 
Files Ts02.xlsx, Ts03.xlsx and Ts04.xlsx are datasets analog to File Ts01.xlsx, but using data from clusters C2, C3 and C4 respectively. 
Data of Files Ts01.xlsx, Ts02.xlsx, Ts03.xlsx and Ts04.xlsx have been used to compose Tables 1, 2, 3, 4, 5, 6 in the manuscript, Figures 3, 5, 8, 9 in the manuscript,  
plus Figures S9, S10, S11, S12, S13, S14, S15, S16 in the Supporting Information.

File Ts05.xlsx features tidal strain calculated for the setting of the shallow magma reservior in Phase 1 of the volcanic crisis, at two-hour intervals, between 2011-07-01 and 2011-10-31. 
Data from File Ts05.xlsx has been used for composition of Figures 6 and 7 in the manuscript.
Files Ts06.xlsx, Ts07.xlsx and Ts08.xlsx are datasets analog to File Ts05.xlsx, but calculating tidal strain for the locations of events belonging to clusters C2, C3 and C4 respectively.
Data of Files Ts06.xlsx, Ts07.xlsx and Ts08.xlsx have been used to compose Figures S1, S2, S3, S4, S5, S6 in the Supporting Information.  

File Ts09.xlsx shows tidal confining stress values corresponding to the events in cluster C1. 
File Ts10.xlsx features values of tidal stress taken hourly for the location corresponding to an event belonging to subcluster C1A. 
File Ts11.xlsx features values of tidal stress taken hourly for the location corresponding to an event belonging to subcluster C1B. 
Figure S7 in the Supporting Information has been produced using data from Files Ts09.xlsx, Ts10.xlsx and Ts11.xlsx. 

File Ts12.xlsx collects all events in four clusters C1-C4, and shows the amplitudes of the tidal confining stress half cycles in which the events occur, considering only ocean tides or only body tides. 
These data were used for stating the predominance of ocean tidal loading against body tides in Chapter 5 - Discussion.

File Ts13.xlsx shows data from the earthquake cluster C1 defined in the manuscript, as well as tidal stress phases and amplitudes, but considering only those events with M >= 2.
Files Ts14.xlsx, Ts15.xlsx and Ts16.xlsx are datasets analog to File Ts13.xlsx, but using data from clusters C2, C3 and C4 (events with M >= 2 only) respectively.
Data of Files Ts13.xlsx, Ts14.xlsx, Ts15.xlsx and Ts16.xlsx have been used to compose Table S3 in the Supporting Information.

File Ts17.xlsx features the 4 declustered catalogs D1, D2, D3 and D4 which are described in Tables S4 and S5 in the Supporting Information.

File Ts18.xlsx collects all events in four clusters C1-C4, and shows the results of tidal tilt (North-South and East-West components). 
These data were used to compose Figures S27 and S28 in the Supporting Information. 

File Ts19.xlsx features tidal stress calculated for the setting of the shallow magma reservior in Phase 1 of the volcanic crisis, at two-hour intervals, between 2011-07-01 and 2011-10-31. 
Data from File Ts19.xlsx has been used for composition of Figure S17 in the manuscript.
Files Ts20.xlsx, Ts21.xlsx and Ts22.xlsx are datasets analog to File Ts19.xlsx, but calculating tidal stress for the locations of events belonging to clusters C2, C3 and C4 respectively.
Data of Files Ts20.xlsx, Ts21.xlsx and Ts22.xlsx have been used to compose Figures S18, S19 and S20 in the Supporting Information.

File Ts23.xlsx shows data from the earthquake cluster C1 defined in the manuscript, as well as tidal stress phases and amplitudes obtained for each event using the methodology explained in the text,
but considering only ocean tides in the calculations. 
Files Ts24.xlsx, Ts25.xlsx and Ts26.xlsx are datasets analog to File Ts23.xlsx, but using data from clusters C2, C3 and C4 respectively. 
Data of Files Ts01.xlsx, Ts02.xlsx, Ts03.xlsx and Ts04.xlsx have been used to compose Figures S21 and S22 in Supporting Information.

File Ts27.xlsx features horizontal tidal stress (Earth tides only) calculated for the setting of the shallow magma reservior in Phase 1 of the volcanic crisis, at two-hour intervals, 
between 2011-07-01 and 2011-10-31. Data from File Ts27.xlsx has been used for composition of Figure S23 in the manuscript.
Files Ts28.xlsx, Ts29.xlsx and Ts30.xlsx are datasets analog to File Ts27.xlsx, but calculating horizontal tidal stress for the locations of events belonging to clusters C2, C3 and C4 respectively.
Data of Files Ts28.xlsx, Ts29.xlsx and Ts30.xlsx have been used to compose Figures S24, S25 and S26 in the Supporting Information.

1. Ts01.xlsx Data used to detect tidal stress correlations in Phase 1 of the volcanic crisis.

1.1 Column "Year", y.
1.2 Column "Month", m.
1.3 Column "Day", d.
1.4 Column "Hour", h.
1.5 Column "Minute", min.
1.6 Column "Second", s.
1.7 Column "Latitude", deg, latitude north of equator.
1.8 Column "Longitude", deg, longitude east of Greenwich.
1.9 Column "Depth", km.
1.10 Column "Phase_east-west_stress", deg, tidal phase angle assigned to the event, calculated for tidal east-west stress.
1.11 Column "Amplitude_east-west_stress", Pa, amplitude of the tidal half cycle in which the event occurs, calculated for tidal east-west stress.
1.12 Column "Phase_north-south_stress", deg, tidal phase angle assigned to the event, calculated for tidal north-south stress.
1.13 Column "Amplitude_north-south_stress", Pa, amplitude of the tidal half cycle in which the event occurs, calculated for tidal north-south stress.
1.14 Column "Phase_vertical_stress", deg, tidal phase angle assigned to the event, calculated for tidal vertical stress.
1.15 Column "Amplitude_vertical_stress", Pa, amplitude of the tidal half cycle in which the event occurs, calculated for tidal vertical stress.
1.16 Column "Phase_confining_stress", deg, tidal phase angle assigned to the event, calculated for tidal confining stress.
1.17 Column "Amplitude_confining_stress", Pa, amplitude of the tidal half cycle in which the event occurs, calculated for tidal confining stress.
1.18 Column "Phase_confining_stress_rate", deg, tidal phase angle assigned to the event, calculated for tidal confining stress rate.
1.19 Column "Amplitude_confining_stress_rate", Pa/h, amplitude of the tidal half cycle in which the event occurs, calculated for tidal confining stress rate.
1.20 Column "Magnitude", earthquake magnitude.
1.21 Column "Autonum", autonumeric code.

2. Ts02.xlsx Data used to detect tidal stress correlations in Phase 2 of the volcanic crisis.

2.1 Column "Year", y.
2.2 Column "Month", m.
2.3 Column "Day", d.
2.4 Column "Hour", h.
2.5 Column "Minute", min.
2.6 Column "Second", s.
2.7 Column "Latitude", deg, latitude north of equator.
2.8 Column "Longitude", deg, longitude east of Greenwich.
2.9 Column "Depth", km.
2.10 Column "Phase_east-west_stress", deg, tidal phase angle assigned to the event, calculated for tidal east-west stress.
2.11 Column "Amplitude_east-west_stress", Pa, amplitude of the tidal half cycle in which the event occurs, calculated for tidal east-west stress.
2.12 Column "Phase_north-south_stress", deg, tidal phase angle assigned to the event, calculated for tidal north-south stress.
2.13 Column "Amplitude_north-south_stress", Pa, amplitude of the tidal half cycle in which the event occurs, calculated for tidal north-south stress.
2.14 Column "Phase_vertical_stress", deg, tidal phase angle assigned to the event, calculated for tidal vertical stress.
2.15 Column "Amplitude_vertical_stress", Pa, amplitude of the tidal half cycle in which the event occurs, calculated for tidal vertical stress.
2.16 Column "Phase_confining_stress", deg, tidal phase angle assigned to the event, calculated for tidal confining stress.
2.17 Column "Amplitude_confining_stress", Pa, amplitude of the tidal half cycle in which the event occurs, calculated for tidal confining stress.
2.18 Column "Phase_confining_stress_rate", deg, tidal phase angle assigned to the event, calculated for tidal confining stress rate.
2.19 Column "Amplitude_confining_stress_rate", Pa/h, amplitude of the tidal half cycle in which the event occurs, calculated for tidal confining stress rate.
2.20 Column "Magnitude", earthquake magnitude.
2.21 Column "Autonum", autonumeric code.

3. Ts03.xlsx Data used to detect tidal stress correlations in Phase 3 of the volcanic crisis.

3.1 Column "Year", y.
3.2 Column "Month", m.
3.3 Column "Day", d.
3.4 Column "Hour", h.
3.5 Column "Minute", min.
3.6 Column "Second", s.
3.7 Column "Latitude", deg, latitude north of equator.
3.8 Column "Longitude", deg, longitude east of Greenwich.
3.9 Column "Depth", km.
3.10 Column "Phase_east-west_stress", deg, tidal phase angle assigned to the event, calculated for tidal east-west stress.
3.11 Column "Amplitude_east-west_stress", Pa, amplitude of the tidal half cycle in which the event occurs, calculated for tidal east-west stress.
3.12 Column "Phase_north-south_stress", deg, tidal phase angle assigned to the event, calculated for tidal north-south stress.
3.13 Column "Amplitude_north-south_stress", Pa, amplitude of the tidal half cycle in which the event occurs, calculated for tidal north-south stress.
3.14 Column "Phase_vertical_stress", deg, tidal phase angle assigned to the event, calculated for tidal vertical stress.
3.15 Column "Amplitude_vertical_stress", Pa, amplitude of the tidal half cycle in which the event occurs, calculated for tidal vertical stress.
3.16 Column "Phase_confining_stress", deg, tidal phase angle assigned to the event, calculated for tidal confining stress.
3.17 Column "Amplitude_confining_stress", Pa, amplitude of the tidal half cycle in which the event occurs, calculated for tidal confining stress.
3.18 Column "Phase_confining_stress_rate", deg, tidal phase angle assigned to the event, calculated for tidal confining stress rate.
3.19 Column "Amplitude_confining_stress_rate", Pa/h, amplitude of the tidal half cycle in which the event occurs, calculated for tidal confining stress rate.
3.20 Column "Magnitude", earthquake magnitude.
3.21 Column "Autonum", autonumeric code.

4. Ts04.xlsx Data used to detect tidal stress correlations in Phase 4 of the volcanic crisis.

4.1 Column "Year", y.
4.2 Column "Month", m.
4.3 Column "Day", d.
4.4 Column "Hour", h.
4.5 Column "Minute", min.
4.6 Column "Second", s.
4.7 Column "Latitude", deg, latitude north of equator.
4.8 Column "Longitude", deg, longitude east of Greenwich.
4.9 Column "Depth", km.
4.10 Column "Phase_east-west_stress", deg, tidal phase angle assigned to the event, calculated for tidal east-west stress.
4.11 Column "Amplitude_east-west_stress", Pa, amplitude of the tidal half cycle in which the event occurs, calculated for tidal east-west stress.
4.12 Column "Phase_north-south_stress", deg, tidal phase angle assigned to the event, calculated for tidal north-south stress.
4.13 Column "Amplitude_north-south_stress", Pa, amplitude of the tidal half cycle in which the event occurs, calculated for tidal north-south stress.
4.14 Column "Phase_vertical_stress", deg, tidal phase angle assigned to the event, calculated for tidal vertical stress.
4.15 Column "Amplitude_vertical_stress", Pa, amplitude of the tidal half cycle in which the event occurs, calculated for tidal vertical stress.
4.16 Column "Phase_confining_stress", deg, tidal phase angle assigned to the event, calculated for tidal confining stress.
4.17 Column "Amplitude_confining_stress", Pa, amplitude of the tidal half cycle in which the event occurs, calculated for tidal confining stress.
4.18 Column "Phase_confining_stress_rate", deg, tidal phase angle assigned to the event, calculated for tidal confining stress rate.
4.19 Column "Amplitude_confining_stress_rate", Pa/h, amplitude of the tidal half cycle in which the event occurs, calculated for tidal confining stress rate.
4.20 Column "Magnitude", earthquake magnitude.
4.21 Column "Autonum", autonumeric code.

5. Ts05.xlsx Tidal strain calculated for the shallow magma reservior between 2011-07-01 and 2011-10-31.

5.1 Column "Latitude", deg, latitude north of equator.
5.2 Column "Longitude", deg, longitude east of Greenwich.
5.3 Column "Depth", km.
5.4 Column "Date", date in format yyyymmdd.
5.5 Column "Time", time in format hour : minute : second.
5.6 Column "Volume strain", nanostrain, tidal volume strain.
5.7 Column "East-West strain", nanostrain, tidal East-West strain.
5.8 Column "North-South strain", nanostrain, tidal North-South strain.
5.9 Column "Vertical strain", nanostrain, tidal Vertical strain.

6. Ts06. Tidal strain calculated for the location of an event belonging to cluster C2.

6.1 Column "Latitude", deg, latitude north of equator.
6.2 Column "Longitude", deg, longitude east of Greenwich.
6.3 Column "Depth", km.
6.4 Column "Date", date in format yyyymmdd.
6.5 Column "Time", time in format hour : minute : second.
6.6 Column "Volume strain", nanostrain, tidal volume strain.
6.7 Column "East-West strain", nanostrain, tidal East-West strain.
6.8 Column "North-South strain", nanostrain, tidal North-South strain.
6.9 Column "Vertical strain", nanostrain, tidal Vertical strain.

7. Ts07. Tidal strain calculated for the location of an event belonging to cluster C3.

7.1 Column "Latitude", deg, latitude north of equator.
7.2 Column "Longitude", deg, longitude east of Greenwich.
7.3 Column "Depth", km.
7.4 Column "Date", date in format yyyymmdd.
7.5 Column "Time", time in format hour : minute : second.
7.6 Column "Volume strain", nanostrain, tidal volume strain.
7.7 Column "East-West strain", nanostrain, tidal East-West strain.
7.8 Column "North-South strain", nanostrain, tidal North-South strain.
7.9 Column "Vertical strain", nanostrain, tidal Vertical strain.

8. Ts08. Tidal strain calculated for the location of an event belonging to cluster C4.

8.1 Column "Latitude", deg, latitude north of equator.
8.2 Column "Longitude", deg, longitude east of Greenwich.
8.3 Column "Depth", km.
8.4 Column "Date", date in format yyyymmdd.
8.5 Column "Time", time in format hour : minute : second.
8.6 Column "Volume strain", nanostrain, tidal volume strain.
8.7 Column "East-West strain", nanostrain, tidal East-West strain.
8.8 Column "North-South strain", nanostrain, tidal North-South strain.
8.9 Column "Vertical strain", nanostrain, tidal Vertical strain.

9. File Ts09.xlsx Tidal confining stress values corresponding to the events in cluster C1.

9.1 Column "Latitude", deg, latitude north of equator.
9.2 Column "Longitude", deg, longitude east of Greenwich.
9.3 Column "Depth", km.
9.4 Column "Date", date in format yyyymmdd.
9.5 Column "Time", time in format hour : minute : second.
9.6 Column "Tides", Pa, tidal confining stress.

10. Ts10.xlsx Hourly values of tidal confining stress obtained for the location of an earthquake belonging to subcluster C1A.

10.1 Column "Year", y.
10.2 Column "Month", m.
10.3 Column "Day", d.
10.4 Column "Hour", h.
10.5 Column "Minute", min.
10.6 Column "Second", s.
10.7 Column "Latitude", deg, latitude north of equator.
10.8 Column "Longitude", deg, longitude east of Greenwich.
10.9 Column "Depth", m.
10.10 Column "Tides", Pa, tidal confining stress.

11. Ts11.xlsx Hourly values of tidal confining stress obtained for the location of an earthquake belonging to subcluster C1B.

11.1 Column "Year", y.
11.2 Column "Month", m.
11.3 Column "Day", d.
11.4 Column "Hour", h.
11.5 Column "Minute", min.
11.6 Column "Second", s.
11.7 Column "Latitude", deg, latitude north of equator.
11.8 Column "Longitude", deg, longitude east of Greenwich.
11.9 Column "Depth", m.
11.10 Column "Tides", Pa, tidal confining stress.

12. Ts12.xlsx Data used to compare ocean tides to body tides

12.1 Column "Cluster", number of the cluster (C1-C4).
12.2 Column "Year", y.
12.3 Column "Month", m.
12.4 Column "Day", d.
12.5 Column "Hour", h.
12.6 Column "Minute", min.
12.7 Column "Second", s.
12.8 Column "Latitude", deg, latitude north of equator.
12.9 Column "Longitude", deg, longitude east of Greenwich.
12.10 Column "Depth", km.
12.11 Column "Autonum", autonumeric code.
12.12 Column "Ampl_ocean_hc", Pa, amplitude of the tidal half cycle in which the event occurs, calculated for tidal confining stress, ocean tides only.
12.13 Column "Ampl_body_hc", Pa, amplitude of the tidal half cycle in which the event occurs, calculated for tidal confining stress, body tides only.

13. Ts13.xlsx Data in Cluster C1 with M>=2

13.1 Column "Year", y.
13.2 Column "Month", m.
13.3 Column "Day", d.
13.4 Column "Hour", h.
13.5 Column "Minute", min.
13.6 Column "Second", s.
13.7 Column "Latitude", deg, latitude north of equator.
13.8 Column "Longitude", deg, longitude east of Greenwich.
13.9 Column "Depth", km.
13.10 Column "Phase_confining_stress", deg, tidal phase angle assigned to the event, calculated for tidal confining stress.
13.11 Column "Amplitude_confining_stress", Pa, amplitude of the tidal half cycle in which the event occurs, calculated for tidal confining stress.
13.12 Column "Magnitude", earthquake magnitude.
13.13 Column "Autonum", autonumeric code.

14. Ts14.xlsx Data in Cluster C2 with M>=2

14.1 Column "Year", y.
14.2 Column "Month", m.
14.3 Column "Day", d.
14.4 Column "Hour", h.
14.5 Column "Minute", min.
14.6 Column "Second", s.
14.7 Column "Latitude", deg, latitude north of equator.
14.8 Column "Longitude", deg, longitude east of Greenwich.
14.9 Column "Depth", km.
14.10 Column "Phase_confining_stress", deg, tidal phase angle assigned to the event, calculated for tidal confining stress.
14.11 Column "Amplitude_confining_stress", Pa, amplitude of the tidal half cycle in which the event occurs, calculated for tidal confining stress.
14.12 Column "Magnitude", earthquake magnitude.
14.13 Column "Autonum", autonumeric code.

15. Ts15.xlsx Data in Cluster C3 with M>=2

15.1 Column "Year", y.
15.2 Column "Month", m.
15.3 Column "Day", d.
15.4 Column "Hour", h.
15.5 Column "Minute", min.
15.6 Column "Second", s.
15.7 Column "Latitude", deg, latitude north of equator.
15.8 Column "Longitude", deg, longitude east of Greenwich.
15.9 Column "Depth", km.
15.10 Column "Phase_confining_stress", deg, tidal phase angle assigned to the event, calculated for tidal confining stress.
15.11 Column "Amplitude_confining_stress", Pa, amplitude of the tidal half cycle in which the event occurs, calculated for tidal confining stress.
15.12 Column "Magnitude", earthquake magnitude.
15.13 Column "Autonum", autonumeric code.

16. Ts16.xlsx Data in Cluster C4 with M>=2

16.1 Column "Year", y.
16.2 Column "Month", m.
16.3 Column "Day", d.
16.4 Column "Hour", h.
16.5 Column "Minute", min.
16.6 Column "Second", s.
16.7 Column "Latitude", deg, latitude north of equator.
16.8 Column "Longitude", deg, longitude east of Greenwich.
16.9 Column "Depth", km.
16.10 Column "Phase_confining_stress", deg, tidal phase angle assigned to the event, calculated for tidal confining stress.
16.11 Column "Amplitude_confining_stress", Pa, amplitude of the tidal half cycle in which the event occurs, calculated for tidal confining stress.
16.12 Column "Magnitude", earthquake magnitude.
16.13 Column "Autonum", autonumeric code.

17. Ts17.xlsx Declustered datasets D1, D2, D3 and D4

17.1 Column "Dataset", number of the declustered dataset (D1-D4).
17.2 Column "Year", y.
17.3 Column "Month", m.
17.4 Column "Day", d.
17.5 Column "Latitude", deg, latitude north of equator.
17.6 Column "Longitude", deg, longitude east of Greenwich.
17.7 Column "Magnitude", earthquake magnitude.
17.8 Column "Depth", km.
17.9 Column "Cluster". It takes the value "+" if the event does not belong to any cluster identified during the declustering process. 
Otherwise, the event is the largest in a cluster identified by the code shown in Table S4 in Supporting Information.   


18. Ts18.xlsx Data used to detect tidal tilt correlations

18.1 Column "Cluster", number of the cluster (C1-C4).
18.2 Column "Year", y.
18.3 Column "Month", m.
18.4 Column "Day", d.
18.5 Column "Hour", h.
18.6 Column "Minute", min.
18.7 Column "Second", s.
18.8 Column "Latitude", deg, latitude north of equator.
18.9 Column "Longitude", deg, longitude east of Greenwich.
18.10 Column "Depth", km.
18.11 Column "Autonum", autonumeric code.
18.12 Column "Phase_tilt_NS", deg, tidal phase angle assigned to the event, calculated for tidal tilt (North-South component).
18.13 Column "Ampl_tilt_NS", nrad, amplitude of the tidal half cycle in which the event occurs, calculated for tidal tilt (North-South component).
18.14 Column "Phase_tilt_EW", deg, tidal phase angle assigned to the event, calculated for tidal tilt (East-West component).
18.15 Column "Ampl_tilt_NS", nrad, amplitude of the tidal half cycle in which the event occurs, calculated for tidal tilt (East-West component).

19. Ts19.xlsx Tidal stress calculated for the shallow magma reservior between 2011-07-01 and 2011-10-31.

19.1 Column "Latitude", deg, latitude north of equator.
19.2 Column "Longitude", deg, longitude east of Greenwich.
19.3 Column "Depth", km.
19.4 Column "Date", date in format yyyymmdd.
19.5 Column "Time", time in format hour : minute : second.
19.6 Column "East-West stress", Pa, tidal East-West stress.
19.7 Column "North-South stress", Pa, tidal North-South stress.
19.8 Column "Vertical stress", Pa, tidal Vertical stress.

20. Ts20.xlsx Tidal stress calculated for the location of an event belonging to cluster C2.

20.1 Column "Latitude", deg, latitude north of equator.
20.2 Column "Longitude", deg, longitude east of Greenwich.
20.3 Column "Depth", km.
20.4 Column "Date", date in format yyyymmdd.
20.5 Column "Time", time in format hour : minute : second.
20.6 Column "East-West stress", Pa, tidal East-West stress.
20.7 Column "North-South stress", Pa, tidal North-South stress.
20.8 Column "Vertical stress", Pa, tidal Vertical stress.

21. Ts21.xlsx Tidal stress calculated for the location of an event belonging to cluster C3.

21.1 Column "Latitude", deg, latitude north of equator.
21.2 Column "Longitude", deg, longitude east of Greenwich.
21.3 Column "Depth", km.
21.4 Column "Date", date in format yyyymmdd.
21.5 Column "Time", time in format hour : minute : second.
21.6 Column "East-West stress", Pa, tidal East-West stress.
21.7 Column "North-South stress", Pa, tidal North-South stress.
21.8 Column "Vertical stress", Pa, tidal Vertical stress.

22. Ts22.xlsx Tidal stress calculated for the location of an event belonging to cluster C4.

22.1 Column "Latitude", deg, latitude north of equator.
22.2 Column "Longitude", deg, longitude east of Greenwich.
22.3 Column "Depth", km.
22.4 Column "Date", date in format yyyymmdd.
22.5 Column "Time", time in format hour : minute : second.
22.6 Column "East-West stress", Pa, tidal East-West stress.
22.7 Column "North-South stress", Pa, tidal North-South stress.
22.8 Column "Vertical stress", Pa, tidal Vertical stress.

23. Ts23.xlsx Data used to detect tidal stress correlations in Phase 1 of the volcanic crisis (ocean tides only).

23.1 Column "Year", y.
23.2 Column "Month", m.
23.3 Column "Day", d.
23.4 Column "Hour", h.
23.5 Column "Minute", min.
23.6 Column "Second", s.
23.7 Column "Latitude", deg, latitude north of equator.
23.8 Column "Longitude", deg, longitude east of Greenwich.
23.9 Column "Depth", km.
23.10 Column "Phase_ocean_confining_stress", deg, tidal phase angle assigned to the event, calculated for tidal confining stress.
23.11 Column "Amplitude_ocean_confining_stress", Pa, amplitude of the tidal half cycle in which the event occurs, calculated for tidal confining stress.
23.12 Column "Magnitude", earthquake magnitude.
23.13 Column "Autonum", autonumeric code.

24. Ts24.xlsx Data used to detect tidal stress correlations in Phase 2 of the volcanic crisis (ocean tides only).

24.1 Column "Year", y.
24.2 Column "Month", m.
24.3 Column "Day", d.
24.4 Column "Hour", h.
24.5 Column "Minute", min.
24.6 Column "Second", s.
24.7 Column "Latitude", deg, latitude north of equator.
24.8 Column "Longitude", deg, longitude east of Greenwich.
24.9 Column "Depth", km.
24.10 Column "Phase_ocean_confining_stress", deg, tidal phase angle assigned to the event, calculated for tidal confining stress.
24.11 Column "Amplitude_ocean_confining_stress", Pa, amplitude of the tidal half cycle in which the event occurs, calculated for tidal confining stress.
24.12 Column "Magnitude", earthquake magnitude.
24.13 Column "Autonum", autonumeric code.

25. Ts25.xlsx Data used to detect tidal stress correlations in Phase 3 of the volcanic crisis (ocean tides only).

25.1 Column "Year", y.
25.2 Column "Month", m.
25.3 Column "Day", d.
25.4 Column "Hour", h.
25.5 Column "Minute", min.
25.6 Column "Second", s.
25.7 Column "Latitude", deg, latitude north of equator.
25.8 Column "Longitude", deg, longitude east of Greenwich.
25.9 Column "Depth", km.
25.10 Column "Phase_ocean_confining_stress", deg, tidal phase angle assigned to the event, calculated for tidal confining stress.
25.11 Column "Amplitude_ocean_confining_stress", Pa, amplitude of the tidal half cycle in which the event occurs, calculated for tidal confining stress.
25.12 Column "Magnitude", earthquake magnitude.
25.13 Column "Autonum", autonumeric code.

26. Ts26.xlsx Data used to detect tidal stress correlations in Phase 4 of the volcanic crisis (ocean tides only).

26.1 Column "Year", y.
26.2 Column "Month", m.
26.3 Column "Day", d.
26.4 Column "Hour", h.
26.5 Column "Minute", min.
26.6 Column "Second", s.
26.7 Column "Latitude", deg, latitude north of equator.
26.8 Column "Longitude", deg, longitude east of Greenwich.
26.9 Column "Depth", km.
26.10 Column "Phase_ocean_confining_stress", deg, tidal phase angle assigned to the event, calculated for tidal confining stress.
26.11 Column "Amplitude_ocean_confining_stress", Pa, amplitude of the tidal half cycle in which the event occurs, calculated for tidal confining stress.
26.12 Column "Magnitude", earthquake magnitude.
26.13 Column "Autonum", autonumeric code.

27. Ts27.xlsx Horizontal tidal stress (Earth tides only) calculated for the shallow magma reservior between 2011-07-01 and 2011-10-31.

27.1 Column "Latitude", deg, latitude north of equator.
27.2 Column "Longitude", deg, longitude east of Greenwich.
27.3 Column "Depth", km.
27.4 Column "Date", date in format yyyymmdd.
27.5 Column "Time", time in format hour : minute : second.
27.6 Column "Horizontal stress", Pa, tidal Horizontal stress.

28. Ts28.xlsx Horizontal tidal stress (Earth tides only) calculated for the location of an event belonging to cluster C2.

28.1 Column "Latitude", deg, latitude north of equator.
28.2 Column "Longitude", deg, longitude east of Greenwich.
28.3 Column "Depth", km.
28.4 Column "Date", date in format yyyymmdd.
28.5 Column "Time", time in format hour : minute : second.
28.6 Column "Horizontal stress", Pa, tidal Horizontal stress.

29. Ts29.xlsx Horizontal tidal stress (Earth tides only) calculated for the location of an event belonging to cluster C3.

29.1 Column "Latitude", deg, latitude north of equator.
29.2 Column "Longitude", deg, longitude east of Greenwich.
29.3 Column "Depth", km.
29.4 Column "Date", date in format yyyymmdd.
29.5 Column "Time", time in format hour : minute : second.
29.6 Column "Horizontal stress", Pa, tidal Horizontal stress.

30. Ts30.xlsx Horizontal tidal stress (Earth tides only) calculated for the location of an event belonging to cluster C4.

30.1 Column "Latitude", deg, latitude north of equator.
30.2 Column "Longitude", deg, longitude east of Greenwich.
30.3 Column "Depth", km.
30.4 Column "Date", date in format yyyymmdd.
30.5 Column "Time", time in format hour : minute : second.
30.6 Column "Horizontal stress", Pa, tidal Horizontal stress.