datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,12 0:30:00,27 ,0.280993,13.41483, 2.64805,3.130772
sgpcmbeC1.c1,1998,12 1:30:00,27 ,0.213688,11.31348,2.561248,2.892737
sgpcmbeC1.c1,1998,12 2:30:00,28 ,0.370636,11.26567,1.994836,2.370208
sgpcmbeC1.c1,1998,12 3:30:00,27 ,0.228731, 10.2548,1.789639,2.262981
sgpcmbeC1.c1,1998,12 4:30:00,29 ,0.211403,14.68642,2.236709,3.675264
sgpcmbeC1.c1,1998,12 5:30:00,29 ,0.202093,21.32192,2.864008,5.267004
sgpcmbeC1.c1,1998,12 6:30:00,29 ,0.241564,32.51129,2.666684,5.964864
sgpcmbeC1.c1,1998,12 7:30:00,29 ,0.169308,29.98464,3.878903, 7.45383
sgpcmbeC1.c1,1998,12 8:30:00,29 ,0.383623,16.33685,2.552132,3.346274
sgpcmbeC1.c1,1998,12 9:30:00,29 ,0.125609,32.83363, 3.47653,6.117268
sgpcmbeC1.c1,1998,1210:30:00,28 ,0.514125,22.73155,4.545363,5.644174
sgpcmbeC1.c1,1998,1211:30:00,29 , 0.44841,13.97102,3.089692,3.430263
sgpcmbeC1.c1,1998,1212:30:00,28 ,0.292789,14.34077,2.281644,2.921229
sgpcmbeC1.c1,1998,1213:30:00,27 , 0.28825,8.584636, 2.34126,2.375152
sgpcmbeC1.c1,1998,1214:30:00,27 ,0.395199, 13.4335,2.237477,3.269058
sgpcmbeC1.c1,1998,1215:30:00,27 ,0.219824,10.26742,1.638283,2.074431
sgpcmbeC1.c1,1998,1216:30:00,28 ,0.338467,15.39728,2.748166,4.000847
sgpcmbeC1.c1,1998,1217:30:00,27 ,0.430884,20.29633,2.834316,4.229153
sgpcmbeC1.c1,1998,1218:30:00,27 ,0.310459,10.17265,2.334808,2.836905
sgpcmbeC1.c1,1998,1219:30:00,27 ,0.179964, 24.5835,2.442807,4.646867
sgpcmbeC1.c1,1998,1220:30:00,26 ,0.409814,20.53258,3.750351,4.819005
sgpcmbeC1.c1,1998,1221:30:00,27 ,0.360791,  15.906, 2.81897,4.002753
sgpcmbeC1.c1,1998,1222:30:00,28 ,0.272994,9.255955,2.653405,3.079622
sgpcmbeC1.c1,1998,1223:30:00,28 ,0.302849, 15.3099,2.568197, 3.18894