datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,01 0:30:00,30 ,       0,1.173861,0.180937,0.390172
sgpcmbeC1.c1,2005,01 1:30:00,31 ,       0,1.229385,0.137906,0.322177
sgpcmbeC1.c1,2005,01 2:30:00,30 ,       0,1.576054,0.152183,0.409275
sgpcmbeC1.c1,2005,01 3:30:00,31 ,       0,1.149519,0.107511,0.303217
sgpcmbeC1.c1,2005,01 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,01 5:30:00,31 ,       0,1.066928,0.075938,0.244685
sgpcmbeC1.c1,2005,01 6:30:00,31 ,       0,1.466051,0.073544,0.296869
sgpcmbeC1.c1,2005,01 7:30:00,31 ,       0,8.427434,   4.524,2.360142
sgpcmbeC1.c1,2005,01 8:30:00,31 ,2.720842,38.64259,13.96144,9.403416
sgpcmbeC1.c1,2005,01 9:30:00,31 ,2.686646,42.92642,14.79259,11.08941
sgpcmbeC1.c1,2005,0110:30:00,31 ,1.439814,73.78306,17.60664,15.13576
sgpcmbeC1.c1,2005,0111:30:00,31 ,1.025053,58.54924,22.88274,18.07572
sgpcmbeC1.c1,2005,0112:30:00,31 ,0.389409, 86.9109,22.84311,19.44343
sgpcmbeC1.c1,2005,0113:30:00,31 ,0.297161,140.4947,26.25597,30.44157
sgpcmbeC1.c1,2005,0114:30:00,31 ,1.112998,145.7389,28.37692,29.39473
sgpcmbeC1.c1,2005,0115:30:00,31 ,1.639691,46.99913,17.61094,13.96896
sgpcmbeC1.c1,2005,0116:30:00,31 ,2.400194,71.62234,15.93717,13.22039
sgpcmbeC1.c1,2005,0117:30:00,31 ,1.169893,22.81212,10.50431,5.686677
sgpcmbeC1.c1,2005,0118:30:00,31 ,       0,1.800316,0.293876, 0.61742
sgpcmbeC1.c1,2005,0119:30:00,31 ,       0,1.680396, 0.19946,0.480263
sgpcmbeC1.c1,2005,0120:30:00,31 ,       0,1.671081,0.192476,0.451586
sgpcmbeC1.c1,2005,0121:30:00,31 ,       0,1.545309,0.203637,0.453346
sgpcmbeC1.c1,2005,0122:30:00,30 ,       0, 1.55073,0.139059,0.396096
sgpcmbeC1.c1,2005,0123:30:00,31 ,       0,1.531743,0.147816,0.370518