GENEActiv accelerometer file related to the #120 OxWearables / stepcount issue

An example of .bin file that have an IndexError when processing.

Consider #120 OxWearables / stepcount issue for more details.

The .csv files are 1-second epoch conversions from the .bin file and contain time, x, y, z columns. The conversion was done by: 

1. reading the .bin with the GENEAread R package.
2. keeping only the time, x, y and z columns.
3. saving the data.frame into a .csv file.

The only difference between the .csv files is the column format used for the time column before saving:

• time column in XXXXXX_....csv had a string class
• time column in XXXXXT....csv had a "POSIXct" "POSIXt" class