datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,10 0:30:00,30 ,       0,0.014474,0.000482,0.002643
sgpcmbeC1.c1,2003,10 1:30:00,30 ,       0, 0.00637,0.000212,0.001163
sgpcmbeC1.c1,2003,10 2:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,10 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,10 4:30:00,30 ,       0,0.001512, 0.00005,0.000276
sgpcmbeC1.c1,2003,10 5:30:00,30 ,       0,0.000559,0.000019,0.000102
sgpcmbeC1.c1,2003,10 6:30:00,30 ,       0,3.123414,1.040562,0.879933
sgpcmbeC1.c1,2003,10 7:30:00,30 ,3.225173,34.24937,20.92505,9.948881
sgpcmbeC1.c1,2003,10 8:30:00,30 ,12.98953,72.32027,52.63731,20.14578
sgpcmbeC1.c1,2003,10 9:30:00,31 ,19.61022,102.9199,77.81808,25.50019
sgpcmbeC1.c1,2003,1010:30:00,31 ,29.03028,124.3355,94.48957,32.36726
sgpcmbeC1.c1,2003,1011:30:00,31 ,10.70479,135.6189, 104.407,33.67839
sgpcmbeC1.c1,2003,1012:30:00,31 ,24.35419,140.3939,109.3308,35.82142
sgpcmbeC1.c1,2003,1013:30:00,31 ,16.29169,  129.72,103.8407,33.86445
sgpcmbeC1.c1,2003,1014:30:00,31 ,4.888542,117.7845,87.07615,33.47866
sgpcmbeC1.c1,2003,1015:30:00,31 , 5.51306,90.85893,64.25753,25.99093
sgpcmbeC1.c1,2003,1016:30:00,31 ,5.598979,62.56995,38.47727,17.21106
sgpcmbeC1.c1,2003,1017:30:00,31 ,0.755064,26.18629,10.56884,6.523909
sgpcmbeC1.c1,2003,1018:30:00,30 ,       0,0.279292, 0.00931,0.050991
sgpcmbeC1.c1,2003,1019:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,1020:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,1021:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,1022:30:00,30 ,       0, 0.00067,0.000022,0.000122
sgpcmbeC1.c1,2003,1023:30:00,29 ,       0,       0,       0,       0