datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,10 0:30:00,31 ,       0,0.152035,0.004904,0.027306
sgpcmbeC1.c1,1998,10 1:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,10 2:30:00,31 ,       0,0.605855,0.019544,0.108815
sgpcmbeC1.c1,1998,10 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,10 4:30:00,31 ,       0,0.095263,0.003073, 0.01711
sgpcmbeC1.c1,1998,10 5:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,10 6:30:00,31 ,       0,9.013807,3.749235,2.576623
sgpcmbeC1.c1,1998,10 7:30:00,31 ,5.709929,79.53994,42.12961,19.12949
sgpcmbeC1.c1,1998,10 8:30:00,31 , 19.6087,184.7534, 88.9177,43.10284
sgpcmbeC1.c1,1998,10 9:30:00,31 ,23.27383,274.0145,120.9567,67.06241
sgpcmbeC1.c1,1998,1010:30:00,31 ,12.69856,318.9586,136.0185,83.98042
sgpcmbeC1.c1,1998,1011:30:00,31 ,36.96716, 349.761,158.6771,93.12013
sgpcmbeC1.c1,1998,1012:30:00,31 ,55.65485,391.3032,165.9255, 94.6844
sgpcmbeC1.c1,1998,1013:30:00,31 , 48.7341,352.9524,172.5092,90.89514
sgpcmbeC1.c1,1998,1014:30:00,31 ,44.24641,267.2891,131.8388,71.11965
sgpcmbeC1.c1,1998,1015:30:00,31 ,19.45411,216.3093,100.9932,55.23186
sgpcmbeC1.c1,1998,1016:30:00,31 ,8.005512,133.7745,60.57511,30.71076
sgpcmbeC1.c1,1998,1017:30:00,31 ,0.866133,55.79331,21.96145,11.38038
sgpcmbeC1.c1,1998,1018:30:00,31 ,       0, 6.80568,0.517603,1.306393
sgpcmbeC1.c1,1998,1019:30:00,31 ,       0,0.162926,0.008447,0.031215
sgpcmbeC1.c1,1998,1020:30:00,31 ,       0,1.415044,0.046744,0.254019
sgpcmbeC1.c1,1998,1021:30:00,31 ,       0,0.212338,0.013624,0.052735
sgpcmbeC1.c1,1998,1022:30:00,31 ,       0,1.144434, 0.04127,0.206166
sgpcmbeC1.c1,1998,1023:30:00,31 ,       0,0.712764,0.022992,0.128016