datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,01 0:30:00,30 ,       0,1.980163,0.301573, 0.64954
sgpcmbeC1.c1,2005,01 1:30:00,31 ,       0,1.585981,0.192637,0.448675
sgpcmbeC1.c1,2005,01 2:30:00,30 ,       0,1.579908,0.169114,0.435824
sgpcmbeC1.c1,2005,01 3:30:00,31 ,       0,1.625271,0.134863,0.378794
sgpcmbeC1.c1,2005,01 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2005,01 5:30:00,31 ,       0,1.172487,0.090225, 0.28544
sgpcmbeC1.c1,2005,01 6:30:00,31 ,       0,1.466051, 0.07387,0.297714
sgpcmbeC1.c1,2005,01 7:30:00,31 ,       0,13.27488,5.802854,3.772032
sgpcmbeC1.c1,2005,01 8:30:00,31 ,2.735613,74.51419,31.01958,22.04832
sgpcmbeC1.c1,2005,01 9:30:00,31 ,2.741634,55.69556,32.24717,18.37845
sgpcmbeC1.c1,2005,0110:30:00,31 ,4.366154,104.9909,36.48132,24.01265
sgpcmbeC1.c1,2005,0111:30:00,31 ,10.05489,117.1435,41.31407,26.46738
sgpcmbeC1.c1,2005,0112:30:00,31 ,2.482209,121.1189,43.73671,41.11572
sgpcmbeC1.c1,2005,0113:30:00,31 ,9.223373,183.8347,41.20942, 40.3295
sgpcmbeC1.c1,2005,0114:30:00,31 ,8.361379, 212.155,50.63417,41.86845
sgpcmbeC1.c1,2005,0115:30:00,31 , 3.82747,90.86304,36.14498,24.30761
sgpcmbeC1.c1,2005,0116:30:00,31 ,2.426134, 88.7324, 33.9103, 24.1324
sgpcmbeC1.c1,2005,0117:30:00,31 ,1.192894,45.11728, 16.6098,12.32399
sgpcmbeC1.c1,2005,0118:30:00,31 ,       0,1.839061,0.309127,0.647577
sgpcmbeC1.c1,2005,0119:30:00,31 ,       0,1.680421,0.227841, 0.54211
sgpcmbeC1.c1,2005,0120:30:00,31 ,       0,1.938158,0.235066,0.530267
sgpcmbeC1.c1,2005,0121:30:00,31 ,       0, 1.75277,0.268233,0.582363
sgpcmbeC1.c1,2005,0122:30:00,30 ,       0,1.977418,0.193901,0.540589
sgpcmbeC1.c1,2005,0123:30:00,31 ,       0,1.531743, 0.19484,0.467567