datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,02 0:30:00,20 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,02 1:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,02 2:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,02 3:30:00,19 ,       0,0.790099,0.041584,0.181261
sgpcmbeC1.c1,2007,02 4:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,02 5:30:00,20 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,02 6:30:00,26 ,       0,1.565371,0.118949,0.420246
sgpcmbeC1.c1,2007,02 7:30:00,28 ,1.888315, 44.1515,22.07363,14.57268
sgpcmbeC1.c1,2007,02 8:30:00,28 ,6.793762,88.39056,47.03554,24.51107
sgpcmbeC1.c1,2007,02 9:30:00,28 ,2.155975,111.1696,55.95557,28.45648
sgpcmbeC1.c1,2007,0210:30:00,28 ,5.860911,201.4873,65.39078,53.38489
sgpcmbeC1.c1,2007,0211:30:00,28 ,10.61522,124.3769,38.32793,28.98401
sgpcmbeC1.c1,2007,0212:30:00,28 ,3.735013,102.3982,28.30176,27.52843
sgpcmbeC1.c1,2007,0213:30:00,28 ,12.39478, 136.487,45.01637,34.84199
sgpcmbeC1.c1,2007,0214:30:00,28 ,12.23478,175.4141,54.04803,34.35916
sgpcmbeC1.c1,2007,0215:30:00,28 ,12.68115,175.1361,60.29138,38.37561
sgpcmbeC1.c1,2007,0216:30:00,28 ,15.30998,129.5639, 55.9609,24.53376
sgpcmbeC1.c1,2007,0217:30:00,28 ,3.681299,62.07095,34.81117,19.12647
sgpcmbeC1.c1,2007,0218:30:00,28 ,       0,10.60324,2.845891,3.329133
sgpcmbeC1.c1,2007,0219:30:00,23 ,       0,1.590001,0.123496,0.412358
sgpcmbeC1.c1,2007,0220:30:00,22 ,       0,1.223967,0.093487,0.295307
sgpcmbeC1.c1,2007,0221:30:00,20 ,       0,1.673938,0.127111,0.396381
sgpcmbeC1.c1,2007,0222:30:00,23 ,       0,0.196209,0.008531,0.040912
sgpcmbeC1.c1,2007,0223:30:00,21 ,       0,0.140366,0.006684, 0.03063