datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,02 0:30:00,26 ,       0,0.260986,0.014453,0.055085
sgpcmbeC1.c1,1999,02 1:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,02 2:30:00,23 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,02 3:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,02 4:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,02 5:30:00,26 ,       0,0.107281,0.004506,0.021051
sgpcmbeC1.c1,1999,02 6:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,02 7:30:00,26 ,0.002757,36.31919,11.01609,11.80542
sgpcmbeC1.c1,1999,02 8:30:00,26 ,0.039125,68.32772,32.67469,25.41888
sgpcmbeC1.c1,1999,02 9:30:00,26 ,0.044458,110.6147,43.54215,30.54713
sgpcmbeC1.c1,1999,0210:30:00,26 ,0.257374, 101.597,38.45381,27.71408
sgpcmbeC1.c1,1999,0211:30:00,26 ,0.320504,192.4185, 52.9352,59.56129
sgpcmbeC1.c1,1999,0212:30:00,26 ,0.233924,257.5021,68.39995,81.40774
sgpcmbeC1.c1,1999,0213:30:00,26 ,0.454895,211.0542,69.40329, 70.5911
sgpcmbeC1.c1,1999,0214:30:00,26 ,0.042802,201.6483,63.20647,  57.065
sgpcmbeC1.c1,1999,0215:30:00,26 ,0.040407,169.0515,66.75638,50.24828
sgpcmbeC1.c1,1999,0216:30:00,26 ,0.023982,  87.659, 48.2147,23.74843
sgpcmbeC1.c1,1999,0217:30:00,26 ,0.015347,48.91206,27.33474,16.27862
sgpcmbeC1.c1,1999,0218:30:00,26 ,       0,5.493625,1.030373,1.626791
sgpcmbeC1.c1,1999,0219:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0220:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0221:30:00,26 ,       0, 0.17325,0.015294,0.044623
sgpcmbeC1.c1,1999,0222:30:00,26 ,       0, 0.30935,0.021971,0.077907
sgpcmbeC1.c1,1999,0223:30:00,26 ,       0,       0,       0,       0