datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,01 0:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,01 1:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,01 2:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,01 3:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,01 4:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,01 5:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,01 6:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,01 7:30:00,31 ,       0,8.333745,3.196815,1.854948
sgpcmbeC1.c1,2006,01 8:30:00,31 ,17.39242,76.27109,43.41439,16.18169
sgpcmbeC1.c1,2006,01 9:30:00,31 ,39.97785,159.3859,85.64753,38.70899
sgpcmbeC1.c1,2006,0110:30:00,31 ,50.99087,259.3284,120.6141,62.59737
sgpcmbeC1.c1,2006,0111:30:00,31 , 55.4577,339.3875,142.3994,81.76272
sgpcmbeC1.c1,2006,0112:30:00,31 ,57.69869,346.2155, 141.113,87.07923
sgpcmbeC1.c1,2006,0113:30:00,31 ,55.58419,312.5381, 133.171,71.50084
sgpcmbeC1.c1,2006,0114:30:00,31 ,51.80756,277.1099,123.2167, 67.2034
sgpcmbeC1.c1,2006,0115:30:00,31 ,44.11936,186.8488,90.94348,39.79721
sgpcmbeC1.c1,2006,0116:30:00,31 ,27.91617,115.1434,55.25108,20.94089
sgpcmbeC1.c1,2006,0117:30:00,31 ,  1.5825,24.94371,11.52261,5.823233
sgpcmbeC1.c1,2006,0118:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0119:30:00,23 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0120:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0121:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0122:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0123:30:00,23 ,       0,       0,       0,       0