datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2001,01 0:30:00,8 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,01 1:30:00,9 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,01 2:30:00,8 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,01 3:30:00,11 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,01 4:30:00,14 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,01 5:30:00,21 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,01 6:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,01 7:30:00,31 ,       0,7.400403,5.036777,2.009954
sgpcmbeC1.c1,2001,01 8:30:00,31 ,1.953196,32.76786,14.56087,8.443161
sgpcmbeC1.c1,2001,01 9:30:00,31 ,3.263444,51.89433,16.33871,14.62167
sgpcmbeC1.c1,2001,0110:30:00,31 , 0.61373,49.95229,16.48164,16.40916
sgpcmbeC1.c1,2001,0111:30:00,31 ,0.384861,59.91062,18.98537,18.82853
sgpcmbeC1.c1,2001,0112:30:00,31 ,0.318881, 94.3517,21.21541,25.88516
sgpcmbeC1.c1,2001,0113:30:00,31 ,0.484426,72.12168,19.20416,20.22583
sgpcmbeC1.c1,2001,0114:30:00,31 ,1.152884,69.40009,22.66356,21.34781
sgpcmbeC1.c1,2001,0115:30:00,31 ,1.600584,65.04649,18.47227,17.66847
sgpcmbeC1.c1,2001,0116:30:00,31 ,3.999394,44.38103,14.28622,10.06956
sgpcmbeC1.c1,2001,0117:30:00,31 ,1.046899,24.79633,10.09561,4.893355
sgpcmbeC1.c1,2001,0118:30:00,30 ,       0,0.306585, 0.01022,0.055975
sgpcmbeC1.c1,2001,0119:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0120:30:00,21 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0121:30:00,15 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0122:30:00,15 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0123:30:00,10 ,       0,       0,       0,       0