datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,08 0:30:00,31 ,       0,1.100512, 0.16801,0.366873
sgpcmbeC1.c1,2005,08 1:30:00,30 ,       0,1.460939,0.265147,0.462747
sgpcmbeC1.c1,2005,08 2:30:00,31 ,       0,0.855449,0.112124,0.262754
sgpcmbeC1.c1,2005,08 3:30:00,31 ,       0,1.146466,0.092994,0.291896
sgpcmbeC1.c1,2005,08 4:30:00,31 ,       0,0.865855,0.044613,0.178459
sgpcmbeC1.c1,2005,08 5:30:00,31 ,       0,9.716598,3.387786,3.234696
sgpcmbeC1.c1,2005,08 6:30:00,31 ,5.077383,43.33973,19.51896, 7.89765
sgpcmbeC1.c1,2005,08 7:30:00,31 ,3.110398,55.41742,20.38842,13.22677
sgpcmbeC1.c1,2005,08 8:30:00,31 ,2.796827,90.69831,23.65976,23.51711
sgpcmbeC1.c1,2005,08 9:30:00,31 ,2.320824,85.64224,29.10467,22.89029
sgpcmbeC1.c1,2005,0810:30:00,31 ,1.515742,98.58046,34.76197,31.79461
sgpcmbeC1.c1,2005,0811:30:00,31 ,1.452977,131.9653,36.42094,36.58967
sgpcmbeC1.c1,2005,0812:30:00,31 ,0.844358,116.9235,39.26074,   36.73
sgpcmbeC1.c1,2005,0813:30:00,31 ,1.301803,139.1269,43.65638,44.34451
sgpcmbeC1.c1,2005,0814:30:00,31 ,1.678971,103.8409,33.19368,28.04364
sgpcmbeC1.c1,2005,0815:30:00,31 ,1.347825,86.19111,32.31383,27.41838
sgpcmbeC1.c1,2005,0816:30:00,31 , 2.53753, 76.6091,22.64297,17.18227
sgpcmbeC1.c1,2005,0817:30:00,31 ,2.478931, 71.5275,18.12784,15.34097
sgpcmbeC1.c1,2005,0818:30:00,31 ,       0,34.34154, 15.9193,8.270091
sgpcmbeC1.c1,2005,0819:30:00,31 ,       0,14.92641,5.451972,5.109822
sgpcmbeC1.c1,2005,0820:30:00,31 ,       0,0.336834, 0.02137,0.082733
sgpcmbeC1.c1,2005,0821:30:00,31 ,       0,0.950018,0.121334,0.297671
sgpcmbeC1.c1,2005,0822:30:00,31 ,       0,1.052328,0.081204,0.237021
sgpcmbeC1.c1,2005,0823:30:00,31 ,       0,1.222158,0.180524,0.357616