datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,02 0:30:00,26 ,       0, 1.49995,0.077719,0.307505
sgpcmbeC1.c1,1999,02 1:30:00,25 ,       0,0.389253, 0.01557,0.077851
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 ,       0,0.610335,0.023474,0.119697
sgpcmbeC1.c1,1999,02 5:30:00,26 ,       0,1.175094,0.061551,0.241923
sgpcmbeC1.c1,1999,02 6:30:00,26 ,       0,0.458803,0.017646,0.089979
sgpcmbeC1.c1,1999,02 7:30:00,26 ,3.781514,46.10552,21.02212,13.41674
sgpcmbeC1.c1,1999,02 8:30:00,26 ,4.793616,82.53431,43.91052,22.46958
sgpcmbeC1.c1,1999,02 9:30:00,26 ,5.304594,123.9779,51.79383,28.01619
sgpcmbeC1.c1,1999,0210:30:00,26 ,14.94031,120.9522,49.72052,23.17177
sgpcmbeC1.c1,1999,0211:30:00,26 ,22.16847,165.1215, 59.0225,50.75482
sgpcmbeC1.c1,1999,0212:30:00,26 ,3.197436, 219.866,68.09491,74.79939
sgpcmbeC1.c1,1999,0213:30:00,26 ,13.41866,216.2385,68.92545, 62.6008
sgpcmbeC1.c1,1999,0214:30:00,26 ,11.82677,181.8519,65.17163,50.57708
sgpcmbeC1.c1,1999,0215:30:00,26 ,6.167859,154.5317,67.93956,40.55062
sgpcmbeC1.c1,1999,0216:30:00,26 ,4.251015,102.1603,58.64573,22.83819
sgpcmbeC1.c1,1999,0217:30:00,26 ,4.456705,64.00901,40.98865,16.24371
sgpcmbeC1.c1,1999,0218:30:00,26 ,       0,13.52506,4.804412,4.267504
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, 0.56341,0.055844,0.158887
sgpcmbeC1.c1,1999,0222:30:00,26 ,       0,1.146834,0.068725,0.253144
sgpcmbeC1.c1,1999,0223:30:00,26 ,       0,       0,       0,       0