datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,01 0:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,01 1:30:00,31 ,       0,0.178184,0.005748,0.032003
sgpcmbeC1.c1,2005,01 2:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,01 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,01 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,01 5:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,01 6:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,01 7:30:00,31 ,       0,3.774259,1.505897,1.346178
sgpcmbeC1.c1,2005,01 8:30:00,30 ,0.430493,19.39208,7.827681,5.770665
sgpcmbeC1.c1,2005,01 9:30:00,31 ,0.226959,19.13161,7.304893,4.754364
sgpcmbeC1.c1,2005,0110:30:00,31 ,1.339631,22.27878,7.920456,5.325442
sgpcmbeC1.c1,2005,0111:30:00,31 ,1.547992,53.47675,10.11413,10.86536
sgpcmbeC1.c1,2005,0112:30:00,31 , 0.28936,83.41347,11.94093,16.40883
sgpcmbeC1.c1,2005,0113:30:00,31 ,1.165724,48.72562,10.28955,11.70892
sgpcmbeC1.c1,2005,0114:30:00,31 ,1.262644,43.68989,11.53533,10.89734
sgpcmbeC1.c1,2005,0115:30:00,31 ,0.501912, 34.3572,8.246976,7.156348
sgpcmbeC1.c1,2005,0116:30:00,30 ,0.791695,25.43825,8.754152,6.970504
sgpcmbeC1.c1,2005,0117:30:00,31 ,       0,11.46026, 3.65466,3.217993
sgpcmbeC1.c1,2005,0118:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,0119:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,0120:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,0121:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,0122:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,0123:30:00,31 ,       0,       0,       0,       0