datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,02 0:30:00,28 ,0.020983,309.8506,25.40221, 61.7012
sgpcmbeC1.c1,2007,02 1:30:00,28 ,       0,320.4045,23.14042, 63.3256
sgpcmbeC1.c1,2007,02 2:30:00,28 ,       0,  364.83,26.02724,71.27111
sgpcmbeC1.c1,2007,02 3:30:00,28 ,       0,270.9874,19.95469,53.36881
sgpcmbeC1.c1,2007,02 4:30:00,28 ,       0, 232.461,19.91297,49.46756
sgpcmbeC1.c1,2007,02 5:30:00,28 ,       0, 490.653,25.11927,92.15632
sgpcmbeC1.c1,2007,02 6:30:00,28 ,       0,353.3504, 19.1083,66.44461
sgpcmbeC1.c1,2007,02 7:30:00,28 ,       0,166.3647,16.44535,38.18279
sgpcmbeC1.c1,2007,02 8:30:00,28 ,       0,141.3386,14.37852,32.00288
sgpcmbeC1.c1,2007,02 9:30:00,28 ,       0,106.0115,12.45668,24.79789
sgpcmbeC1.c1,2007,0210:30:00,28 ,       0,226.1492,14.23698,42.64641
sgpcmbeC1.c1,2007,0211:30:00,28 ,       0,307.2952,16.27766,57.59031
sgpcmbeC1.c1,2007,0212:30:00,28 ,       0,62.93206,7.754532,13.36722
sgpcmbeC1.c1,2007,0213:30:00,28 ,0.046767,265.9175,14.31062,49.70683
sgpcmbeC1.c1,2007,0214:30:00,28 ,0.108956,199.6488,13.87325,37.83359
sgpcmbeC1.c1,2007,0215:30:00,27 ,0.089551,188.4482,18.16554,39.56564
sgpcmbeC1.c1,2007,0216:30:00,28 ,       0,165.0621,17.45422,38.88403
sgpcmbeC1.c1,2007,0217:30:00,28 ,0.184693,121.8497,13.17734,25.05053
sgpcmbeC1.c1,2007,0218:30:00,28 , 0.23721,122.2182,12.15519,24.52577
sgpcmbeC1.c1,2007,0219:30:00,28 ,0.149935, 186.897,18.98915,42.72864
sgpcmbeC1.c1,2007,0220:30:00,28 ,0.061472,75.20208,12.32609,21.12233
sgpcmbeC1.c1,2007,0221:30:00,28 ,       0,165.9646,15.91576,38.51691
sgpcmbeC1.c1,2007,0222:30:00,28 ,       0,135.5152,13.52928, 26.8056
sgpcmbeC1.c1,2007,0223:30:00,28 ,0.012448,481.3228,27.83837,90.90594