datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,11 0:30:00,30 ,       0,2.043825,0.208425,0.556061
sgpcmbeC1.c1,2004,11 1:30:00,30 ,       0,1.800792,0.155368,0.452574
sgpcmbeC1.c1,2004,11 2:30:00,30 ,       0,1.775528,0.126539,0.394766
sgpcmbeC1.c1,2004,11 3:30:00,30 ,       0,1.970897, 0.16902,0.521399
sgpcmbeC1.c1,2004,11 4:30:00,30 ,       0,1.235059,0.063998,0.254041
sgpcmbeC1.c1,2004,11 5:30:00,30 ,       0,1.264529,0.060485,0.248569
sgpcmbeC1.c1,2004,11 6:30:00,30 ,       0,2.578855,0.454659,0.879953
sgpcmbeC1.c1,2004,11 7:30:00,30 ,3.385613, 48.0395, 16.7272,14.25865
sgpcmbeC1.c1,2004,11 8:30:00,30 ,1.298473,84.88501,28.09946,20.60881
sgpcmbeC1.c1,2004,11 9:30:00,30 ,3.609666,128.0665,40.58858,30.89416
sgpcmbeC1.c1,2004,1110:30:00,30 ,3.241386,  163.28,47.84769,38.45511
sgpcmbeC1.c1,2004,1111:30:00,30 , 5.51994,152.9492,45.19275,38.73917
sgpcmbeC1.c1,2004,1112:30:00,30 , 4.80724,158.6369,43.72801,38.71269
sgpcmbeC1.c1,2004,1113:30:00,30 ,5.402698,156.9263,42.82483, 38.2519
sgpcmbeC1.c1,2004,1114:30:00,30 ,8.372975,111.7796,39.95273, 25.6422
sgpcmbeC1.c1,2004,1115:30:00,30 ,3.889981,101.8319,34.98068,23.43813
sgpcmbeC1.c1,2004,1116:30:00,30 ,4.247674,62.36115,26.94977,18.95032
sgpcmbeC1.c1,2004,1117:30:00,30 ,       0,23.79265,5.953193,5.961224
sgpcmbeC1.c1,2004,1118:30:00,30 ,       0,1.727077,0.286153,0.556307
sgpcmbeC1.c1,2004,1119:30:00,30 ,       0,1.135259,0.123973,0.327913
sgpcmbeC1.c1,2004,1120:30:00,30 ,       0,1.631595,0.281336,0.515917
sgpcmbeC1.c1,2004,1121:30:00,30 ,       0, 1.59949,0.169489,0.460695
sgpcmbeC1.c1,2004,1122:30:00,30 ,       0,1.165994,0.124791,0.311486
sgpcmbeC1.c1,2004,1123:30:00,30 ,       0, 1.83503, 0.36516, 0.65695