datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,09 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,09 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,09 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,09 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,09 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,09 5:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,09 6:30:00,30 ,2.488925, 43.5783,26.43161,10.44241
sgpcmbeC1.c1,2002,09 7:30:00,30 ,8.660402,91.57016,57.93495,18.21306
sgpcmbeC1.c1,2002,09 8:30:00,30 ,10.66178,117.7835,69.70773,22.82868
sgpcmbeC1.c1,2002,09 9:30:00,30 ,40.30154, 170.496,74.09344,37.79967
sgpcmbeC1.c1,2002,0910:30:00,30 ,31.98215,177.6638, 68.0871, 52.0131
sgpcmbeC1.c1,2002,0911:30:00,30 ,13.38724,293.6246,84.16225,84.13963
sgpcmbeC1.c1,2002,0912:30:00,30 ,3.399498,426.4001,111.0183,109.2326
sgpcmbeC1.c1,2002,0913:30:00,30 ,19.91853,     331,104.2062,91.91913
sgpcmbeC1.c1,2002,0914:30:00,30 ,32.50168,259.1305,101.2023,74.02625
sgpcmbeC1.c1,2002,0915:30:00,30 ,38.30029,211.1758,81.17933,45.05398
sgpcmbeC1.c1,2002,0916:30:00,30 ,9.056497,167.1307,68.55316,33.61711
sgpcmbeC1.c1,2002,0917:30:00,30 ,3.152447,80.19691,52.40617,17.20043
sgpcmbeC1.c1,2002,0918:30:00,30 ,       0,35.13398,17.09628,10.98375
sgpcmbeC1.c1,2002,0919:30:00,29 ,       0,0.559294,0.032726,0.124452
sgpcmbeC1.c1,2002,0920:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0921:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0922:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0923:30:00,27 ,       0,0.258199,0.009563, 0.04969