\addplot[smooth,red,thin,mark=o] %
plot coordinates{(1,1621.711)(2,1741.242)(3,1787.87)(4,1620.427)(5,1900.837)(6,1800.772)(7,1680.388)(8,1679.35)(9,1741.417)(10,1627.536)(11,1616.091)(12,1739.951)(13,1783.2)(14,1619.707)(15,1898.427)(16,1799.597)(17,1675.652)(18,1678.434)(19,1741.984)(20,1627.591)(21,1614.264)};
\addlegendentry{0.002 mm$^{-1}$}
\addplot[smooth,green,thin,mark=square] %
plot coordinates{(1,1116.733)(2,1157.15)(3,1169.024)(4,1135.574)(5,1301.985)(6,1207.633)(7,1132.749)(8,1147.357)(9,1175.708)(10,1128.286)(11,1122.809)(12,1153.983)(13,1164.26)(14,1134.313)(15,1297.503)(16,1205.211)(17,1132.671)(18,1146.829)(19,1176.072)(20,1127.026)(21,1120.98)};
\addlegendentry{0.003 mm$^{-1}$}
\addplot[smooth,cyan,thick,mark=triangle] %
plot coordinates{(1,1147.895)(2,1191.61)(3,1157.357)(4,1179.264)(5,1179.061)(6,1214.703)(7,1172.429)(8,1186.336)(9,1139.448)(10,1157.359)(11,1152.93)(12,1193.032)(13,1156.246)(14,1177.984)(15,1178.076)(16,1214.155)(17,1172.056)(18,1185.92)(19,1138.932)(20,1156.77)(21,1151.346)};
\addlegendentry{0.004 mm$^{-1}$}
\addplot[smooth,teal,thick,dashed,mark=square,mark options={solid}] %
plot coordinates{(1,1170.677)(2,1230.922)(3,1196.646)(4,1220.174)(5,1208.908)(6,1239.191)(7,1208.993)(8,1216.854)(9,1173.149)(10,1196.344)(11,1177.151)(12,1232.116)(13,1195.453)(14,1218.761)(15,1208.059)(16,1238.639)(17,1208.639)(18,1216.381)(19,1172.475)(20,1196.324)(21,1175.796)};
\addlegendentry{0.005 mm$^{-1}$}
\addplot[smooth,orange,thick,dashed,mark=triangle,mark options={solid}] %
plot coordinates{(1,1189.663)(2,1261.573)(3,1231.541)(4,1260.207)(5,1232.628)(6,1258.897)(7,1243.604)(8,1237.745)(9,1208.524)(10,1230.8)(11,1196.139)(12,1262.3)(13,1230.204)(14,1258.672)(15,1231.724)(16,1258.376)(17,1243.275)(18,1237.298)(19,1207.833)(20,1230.764)(21,1194.826)};
\addlegendentry{0.006 mm$^{-1}$}
