datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,11 0:30:00,11 ,       0,137.3402,22.54124,43.19732
sgpcmbeC1.c1,2007,11 1:30:00,11 ,       0, 258.574,31.87421, 77.1982
sgpcmbeC1.c1,2007,11 2:30:00,11 ,       0, 442.549,57.80162,136.6387
sgpcmbeC1.c1,2007,11 3:30:00,11 ,       0,479.0398,61.03741,147.0255
sgpcmbeC1.c1,2007,11 4:30:00,11 ,       0,471.2292,62.35259,148.3469
sgpcmbeC1.c1,2007,11 5:30:00,11 ,       0,401.5996,47.27822,121.9937
sgpcmbeC1.c1,2007,11 6:30:00,11 ,       0, 268.162,33.54571,82.48543
sgpcmbeC1.c1,2007,11 7:30:00,11 ,       0,264.6771,34.41885,82.63188
sgpcmbeC1.c1,2007,11 8:30:00,11 ,       0, 303.174,37.87896,93.77849
sgpcmbeC1.c1,2007,11 9:30:00,11 ,       0,309.7234,31.03608,92.69378
sgpcmbeC1.c1,2007,1110:30:00,11 ,       0,276.5956,28.15737,82.51995
sgpcmbeC1.c1,2007,1111:30:00,11 ,0.041165,116.8427,13.26038,34.58182
sgpcmbeC1.c1,2007,1112:30:00,11 ,0.029629,138.9192,19.23557,42.23451
sgpcmbeC1.c1,2007,1113:30:00,11 ,0.038268,91.79952,20.33379,34.83205
sgpcmbeC1.c1,2007,1114:30:00,11 ,0.053117,194.5434,29.12054,58.43766
sgpcmbeC1.c1,2007,1115:30:00,12 ,0.009537,353.5868,39.92511,100.7895
sgpcmbeC1.c1,2007,1116:30:00,12 , 0.16617,334.3693,43.80459,98.16587
sgpcmbeC1.c1,2007,1117:30:00,12 ,0.136396,250.7407,25.59841,71.14803
sgpcmbeC1.c1,2007,1118:30:00,12 ,0.531249,204.5717,22.40026,57.89915
sgpcmbeC1.c1,2007,1119:30:00,12 ,0.347018,211.1365,28.41546, 58.7223
sgpcmbeC1.c1,2007,1120:30:00,12 ,       0,132.4145,18.43407,37.13347
sgpcmbeC1.c1,2007,1121:30:00,12 ,       0,302.7679,40.59578,85.68464
sgpcmbeC1.c1,2007,1122:30:00,12 ,       0,313.4754,53.69033,99.03116
sgpcmbeC1.c1,2007,1123:30:00,12 ,       0,328.0663,64.92423, 111.384