datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,12 0:30:00,25 ,       0,0.005472,0.000224,0.001094
sgpcmbeC1.c1,2005,12 1:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,12 2:30:00,23 ,       0,0.138317,0.014763,0.039659
sgpcmbeC1.c1,2005,12 3:30:00,26 ,       0,0.014295, 0.00055,0.002803
sgpcmbeC1.c1,2005,12 4:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,12 5:30:00,30 ,       0,0.052952,0.002247,0.009933
sgpcmbeC1.c1,2005,12 6:30:00,30 ,       0,0.294694,0.014164,0.058067
sgpcmbeC1.c1,2005,12 7:30:00,31 ,       0, 6.74952,2.211437,1.942402
sgpcmbeC1.c1,2005,12 8:30:00,31 ,1.455509,50.80017,29.46606,14.83977
sgpcmbeC1.c1,2005,12 9:30:00,31 ,12.86006,101.7332,64.28108,27.70041
sgpcmbeC1.c1,2005,1210:30:00,31 , 25.5112,137.8223,89.37618, 33.5812
sgpcmbeC1.c1,2005,1211:30:00,30 ,22.36176,156.8407,105.3846,41.96806
sgpcmbeC1.c1,2005,1212:30:00,31 ,20.53469,159.1472, 111.402, 44.4577
sgpcmbeC1.c1,2005,1213:30:00,31 ,18.15272,147.6502,107.6382,42.33312
sgpcmbeC1.c1,2005,1214:30:00,31 ,11.50966,123.6924,84.39904,42.06855
sgpcmbeC1.c1,2005,1215:30:00,31 ,3.931551,87.87327,56.21828,29.71307
sgpcmbeC1.c1,2005,1216:30:00,31 ,1.341844,41.62973,22.14252,12.89717
sgpcmbeC1.c1,2005,1217:30:00,31 ,       0,5.197155,1.350691,1.419214
sgpcmbeC1.c1,2005,1218:30:00,24 ,       0,0.345922,0.014413,0.070611
sgpcmbeC1.c1,2005,1219:30:00,23 ,       0,0.019708,0.001371,0.004441
sgpcmbeC1.c1,2005,1220:30:00,23 ,       0,0.030025,0.001731,0.006497
sgpcmbeC1.c1,2005,1221:30:00,23 ,       0,0.566966,0.024651,0.118221
sgpcmbeC1.c1,2005,1222:30:00,22 ,       0,0.113942,0.006813,0.024509
sgpcmbeC1.c1,2005,1223:30:00,24 ,       0,0.186415,0.007767,0.038052