datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,08 0:30:00,29 ,       0,0.549642,0.028999,0.111362
sgpcmbeC1.c1,2006,08 1:30:00,28 ,       0,1.315532,0.076833,0.279679
sgpcmbeC1.c1,2006,08 2:30:00,29 ,       0,0.894728,0.063066,0.225625
sgpcmbeC1.c1,2006,08 3:30:00,31 ,       0,0.058155,0.001876,0.010445
sgpcmbeC1.c1,2006,08 4:30:00,31 ,       0,0.051177,0.002185,0.009451
sgpcmbeC1.c1,2006,08 5:30:00,31 , 0.00153,1.173073, 0.28931,0.217206
sgpcmbeC1.c1,2006,08 6:30:00,31 ,0.074522,57.43208,21.01668,21.07086
sgpcmbeC1.c1,2006,08 7:30:00,31 ,0.000502,210.7654,106.5656,78.01845
sgpcmbeC1.c1,2006,08 8:30:00,31 ,0.167423,393.6088,221.6931,150.6839
sgpcmbeC1.c1,2006,08 9:30:00,31 , 2.66391,556.5513,317.8664,212.9146
sgpcmbeC1.c1,2006,0810:30:00,31 ,1.760254,699.5537,418.4723, 255.476
sgpcmbeC1.c1,2006,0811:30:00,31 ,1.264709,796.8951,501.8289,289.1059
sgpcmbeC1.c1,2006,0812:30:00,31 ,1.235718,831.1998,519.9004,262.7239
sgpcmbeC1.c1,2006,0813:30:00,31 ,0.215622,816.9419,487.4027,238.1285
sgpcmbeC1.c1,2006,0814:30:00,31 ,1.766602,728.6418,428.4835,216.3487
sgpcmbeC1.c1,2006,0815:30:00,31 ,0.005375, 567.608, 336.534, 175.137
sgpcmbeC1.c1,2006,0816:30:00,31 ,       0, 403.465, 226.117,133.6883
sgpcmbeC1.c1,2006,0817:30:00,31 ,       0,236.4985,121.3847,73.36418
sgpcmbeC1.c1,2006,0818:30:00,31 ,       0, 76.7709,29.13564,23.59856
sgpcmbeC1.c1,2006,0819:30:00,31 ,0.049705,4.161399,0.717543,0.981674
sgpcmbeC1.c1,2006,0820:30:00,31 ,       0,1.037528,0.054376,0.191238
sgpcmbeC1.c1,2006,0821:30:00,30 ,       0,0.870521,0.052263,0.178222
sgpcmbeC1.c1,2006,0822:30:00,30 ,       0,0.255033,0.013183,0.050376
sgpcmbeC1.c1,2006,0823:30:00,31 ,       0,1.324265,0.065751,0.245724