datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,06 0:30:00,27 ,       0,0.575422,0.074831,0.181558
sgpcmbeC1.c1,2005,06 1:30:00,27 ,       0,1.171988,0.060713,0.236631
sgpcmbeC1.c1,2005,06 2:30:00,27 ,       0,1.236467,0.086553, 0.31241
sgpcmbeC1.c1,2005,06 3:30:00,27 ,       0,0.626312,0.028296,0.122413
sgpcmbeC1.c1,2005,06 4:30:00,27 ,       0,  0.1583,0.013479,0.037197
sgpcmbeC1.c1,2005,06 5:30:00,27 ,       0,27.68309,17.49096,7.078585
sgpcmbeC1.c1,2005,06 6:30:00,27 ,8.964017,117.4355,73.76012,24.56689
sgpcmbeC1.c1,2005,06 7:30:00,27 ,23.85816,181.2708, 128.447,41.95819
sgpcmbeC1.c1,2005,06 8:30:00,28 ,92.55241, 354.763,193.7052, 68.5781
sgpcmbeC1.c1,2005,06 9:30:00,28 ,105.9013,399.4192,  226.91,86.11893
sgpcmbeC1.c1,2005,0610:30:00,28 ,39.57095,476.9986,254.2904,102.8619
sgpcmbeC1.c1,2005,0611:30:00,28 ,122.0406,452.9697, 259.609,95.68492
sgpcmbeC1.c1,2005,0612:30:00,27 ,99.68884,507.5435,265.3992,98.87698
sgpcmbeC1.c1,2005,0613:30:00,27 ,102.7725,509.8654,269.7799,102.9324
sgpcmbeC1.c1,2005,0614:30:00,27 ,146.5128,404.6539,236.4049,70.16393
sgpcmbeC1.c1,2005,0615:30:00,27 ,113.6585,301.9118,203.8888, 47.8938
sgpcmbeC1.c1,2005,0616:30:00,27 ,50.10556,248.8205,165.8775, 45.2054
sgpcmbeC1.c1,2005,0617:30:00,27 ,21.97794,181.0511,125.0158,30.78647
sgpcmbeC1.c1,2005,0618:30:00,27 ,9.482041,100.0006,72.34552,20.95749
sgpcmbeC1.c1,2005,0619:30:00,27 ,       0,30.97737,20.15183,7.678103
sgpcmbeC1.c1,2005,0620:30:00,27 ,       0,0.250429,0.022804, 0.05503
sgpcmbeC1.c1,2005,0621:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,0622:30:00,27 ,       0,0.277465,0.018631, 0.06751
sgpcmbeC1.c1,2005,0623:30:00,27 ,       0,0.685592,0.026952,0.131879