datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,09 0:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,09 1:30:00,28 ,       0, 0.43513, 0.01554,0.082232
sgpcmbeC1.c1,2006,09 2:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,09 3:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,09 4:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,09 5:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,09 6:30:00,30 , 0.60943,40.00938,24.58733,  10.499
sgpcmbeC1.c1,2006,09 7:30:00,30 ,1.334807,101.3113,50.99985,24.89539
sgpcmbeC1.c1,2006,09 8:30:00,30 ,11.82507,111.4339,59.33633,22.24944
sgpcmbeC1.c1,2006,09 9:30:00,30 ,8.918476,207.8194,63.90779, 39.0829
sgpcmbeC1.c1,2006,0910:30:00,30 ,17.62268,209.4098, 55.0964,43.63294
sgpcmbeC1.c1,2006,0911:30:00,30 ,13.07739,294.4551,88.04869,90.28798
sgpcmbeC1.c1,2006,0912:30:00,30 ,2.970623,344.3502,91.75959,106.1271
sgpcmbeC1.c1,2006,0913:30:00,30 ,19.51307, 278.418,91.93132, 78.4775
sgpcmbeC1.c1,2006,0914:30:00,30 ,37.73879, 372.882,96.88071,76.53966
sgpcmbeC1.c1,2006,0915:30:00,30 , 43.2007,229.1381,87.96691,48.97005
sgpcmbeC1.c1,2006,0916:30:00,30 ,13.35191,133.7451, 72.9854,28.87135
sgpcmbeC1.c1,2006,0917:30:00,30 ,15.48777,94.09286,55.40053,17.79559
sgpcmbeC1.c1,2006,0918:30:00,30 ,2.903535,43.21745, 17.3894, 9.80408
sgpcmbeC1.c1,2006,0919:30:00,28 ,       0,0.678351,0.024227,0.128196
sgpcmbeC1.c1,2006,0920:30:00,28 ,       0,0.550784,0.019671,0.104088
sgpcmbeC1.c1,2006,0921:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0922:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0923:30:00,29 ,       0,       0,       0,       0