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 ,       0,12.97141,4.868505,2.470551
sgpcmbeC1.c1,2006,01 8:30:00,31 ,5.892769,35.61839,15.04223,8.676656
sgpcmbeC1.c1,2006,01 9:30:00,31 ,2.547108,41.41521,13.12923,11.26748
sgpcmbeC1.c1,2006,0110:30:00,31 ,1.553821,81.92021,19.47747,19.93108
sgpcmbeC1.c1,2006,0111:30:00,31 ,0.414537,105.3329,22.13724,26.57345
sgpcmbeC1.c1,2006,0112:30:00,31 ,0.300649,45.18945,15.01027, 15.2961
sgpcmbeC1.c1,2006,0113:30:00,31 ,0.360849,84.13881,20.24815,23.83108
sgpcmbeC1.c1,2006,0114:30:00,31 ,0.832665, 92.3939,18.03124,21.21325
sgpcmbeC1.c1,2006,0115:30:00,31 ,1.594587,68.09364,  15.708, 16.0849
sgpcmbeC1.c1,2006,0116:30:00,31 ,4.013516,39.01338,13.24684,9.748976
sgpcmbeC1.c1,2006,0117:30:00,31 ,3.058826,20.65634,10.30132,4.193629
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