datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,08 0:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,08 1:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,08 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,08 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,08 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,08 5:30:00,31 ,       0,0.313852,0.060078,0.095831
sgpcmbeC1.c1,2007,08 6:30:00,31 ,0.015927,54.19846, 23.0813,18.41061
sgpcmbeC1.c1,2007,08 7:30:00,31 ,0.124079,214.4025,120.4099, 71.1002
sgpcmbeC1.c1,2007,08 8:30:00,31 ,0.554565,398.5262,267.6399,118.2113
sgpcmbeC1.c1,2007,08 9:30:00,31 ,1.255981,570.8111,370.3085,196.9685
sgpcmbeC1.c1,2007,0810:30:00,31 ,16.06131,696.5531,463.0377,234.8599
sgpcmbeC1.c1,2007,0811:30:00,31 ,0.371674,772.4891,  547.94, 245.404
sgpcmbeC1.c1,2007,0812:30:00,31 ,0.710518, 821.601, 539.752,256.7362
sgpcmbeC1.c1,2007,0813:30:00,31 ,3.625229,784.1766,509.6593,255.2544
sgpcmbeC1.c1,2007,0814:30:00,31 ,0.372021,730.7408,491.1351,220.8555
sgpcmbeC1.c1,2007,0815:30:00,31 ,0.989853, 582.768,384.1792,175.6222
sgpcmbeC1.c1,2007,0816:30:00,31 ,0.306759, 409.761,258.4463, 132.543
sgpcmbeC1.c1,2007,0817:30:00,31 ,0.063744,232.4983,141.5474,73.18497
sgpcmbeC1.c1,2007,0818:30:00,31 ,       0,77.18996,33.74049,24.32268
sgpcmbeC1.c1,2007,0819:30:00,31 ,       0,3.456717,0.519516,0.825184
sgpcmbeC1.c1,2007,0820:30:00,26 ,       0,0.999505,0.038442,0.196019
sgpcmbeC1.c1,2007,0821:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0822:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0823:30:00,31 ,       0,       0,       0,       0