datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,08 0:30:00,31 ,       0,1.814948,0.213487,0.517304
sgpcmbeC1.c1,2004,08 1:30:00,31 ,       0,1.015384,0.032754,0.182368
sgpcmbeC1.c1,2004,08 2:30:00,31 ,       0,1.084193,0.047539,0.204707
sgpcmbeC1.c1,2004,08 3:30:00,31 ,       0,1.197277, 0.06033,0.243139
sgpcmbeC1.c1,2004,08 4:30:00,31 ,       0, 0.98195,0.031676,0.176363
sgpcmbeC1.c1,2004,08 5:30:00,31 ,       0,9.996944,3.610831,2.623721
sgpcmbeC1.c1,2004,08 6:30:00,31 ,7.465703,  68.494,36.50051,14.27719
sgpcmbeC1.c1,2004,08 7:30:00,31 , 7.62702,128.3827,59.24959,29.57209
sgpcmbeC1.c1,2004,08 8:30:00,31 ,14.72017,179.3828, 73.5684,39.97434
sgpcmbeC1.c1,2004,08 9:30:00,31 , 21.2044,236.8459,98.70885,64.32916
sgpcmbeC1.c1,2004,0810:30:00,31 ,17.01001, 367.887,102.0429,91.28649
sgpcmbeC1.c1,2004,0811:30:00,31 ,18.29526,311.0262,92.02899,91.21445
sgpcmbeC1.c1,2004,0812:30:00,31 ,3.194983,355.3741,98.82125, 109.568
sgpcmbeC1.c1,2004,0813:30:00,31 ,16.13493,356.0013,122.7769,109.0997
sgpcmbeC1.c1,2004,0814:30:00,31 ,27.76981,330.1704,118.5598,78.90821
sgpcmbeC1.c1,2004,0815:30:00,31 ,42.13207,268.8579,114.6568,73.19743
sgpcmbeC1.c1,2004,0816:30:00,31 , 37.3308,181.9884,81.44155,37.21474
sgpcmbeC1.c1,2004,0817:30:00,31 ,14.43339,146.8548,66.05899, 26.0897
sgpcmbeC1.c1,2004,0818:30:00,31 ,3.159029,66.84718,46.68576, 14.3896
sgpcmbeC1.c1,2004,0819:30:00,31 ,       0,18.34092,7.838608,5.066537
sgpcmbeC1.c1,2004,0820:30:00,31 ,       0,0.811703,0.038742,0.159571
sgpcmbeC1.c1,2004,0821:30:00,31 ,       0, 1.19879, 0.12836,0.350764
sgpcmbeC1.c1,2004,0822:30:00,31 ,       0,0.643378,0.051177,0.162305
sgpcmbeC1.c1,2004,0823:30:00,31 ,       0,1.161928,0.037482,0.208688