datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,10 0:30:00,30 ,       0,1.370336,0.045678,0.250188
sgpcmbeC1.c1,2002,10 1:30:00,30 ,       0,1.789388,0.059646,0.326696
sgpcmbeC1.c1,2002,10 2:30:00,31 ,       0,1.066801,0.034413,0.191603
sgpcmbeC1.c1,2002,10 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,10 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,10 5:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,10 6:30:00,31 ,       0, 20.3666,5.015495,5.541948
sgpcmbeC1.c1,2002,10 7:30:00,31 , 2.67506,68.81564,28.92266,22.85935
sgpcmbeC1.c1,2002,10 8:30:00,31 ,2.423415,104.7374,40.55059,28.04186
sgpcmbeC1.c1,2002,10 9:30:00,31 ,4.040313,134.9712,43.26063,34.59978
sgpcmbeC1.c1,2002,1010:30:00,31 ,3.702851,211.1916,54.46032,49.12411
sgpcmbeC1.c1,2002,1011:30:00,31 ,9.808155,232.3316,64.42101,65.47615
sgpcmbeC1.c1,2002,1012:30:00,31 , 5.22207,286.1665,67.47854,72.76529
sgpcmbeC1.c1,2002,1013:30:00,31 ,10.10474,213.7672,63.83747,54.62288
sgpcmbeC1.c1,2002,1014:30:00,31 ,3.765598,197.2512,58.26195,46.13421
sgpcmbeC1.c1,2002,1015:30:00,31 ,1.909063,154.4208,51.48722,38.89038
sgpcmbeC1.c1,2002,1016:30:00,31 ,4.001911,96.45408,39.09026,27.08675
sgpcmbeC1.c1,2002,1017:30:00,31 , 0.55871,63.60641,24.69202,19.66492
sgpcmbeC1.c1,2002,1018:30:00,31 ,       0,2.503879,0.656923,0.946395
sgpcmbeC1.c1,2002,1019:30:00,31 ,       0,1.557757,0.134491,0.419408
sgpcmbeC1.c1,2002,1020:30:00,31 ,       0,1.519497,0.071651,0.296765
sgpcmbeC1.c1,2002,1021:30:00,31 ,       0,0.399466,0.012886,0.071746
sgpcmbeC1.c1,2002,1022:30:00,31 ,       0, 1.58777,0.051218,0.285172
sgpcmbeC1.c1,2002,1023:30:00,30 ,       0,       0,       0,       0