datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,02 0:30:00,28 ,0.396077,2.325709,1.378667,0.533549
sgpcmbeC1.c1,2005,02 1:30:00,28 ,       0,2.269053,1.150113,0.716948
sgpcmbeC1.c1,2005,02 2:30:00,28 ,0.149071,2.347189,1.255863,0.550188
sgpcmbeC1.c1,2005,02 3:30:00,28 ,0.008674,2.440537,1.102317,0.670056
sgpcmbeC1.c1,2005,02 4:30:00,28 ,0.040561,2.137359,1.357057,0.590656
sgpcmbeC1.c1,2005,02 5:30:00,28 ,0.519144,2.439799,1.411491,0.535146
sgpcmbeC1.c1,2005,02 6:30:00,28 ,0.635129,2.432923,1.513521,0.507922
sgpcmbeC1.c1,2005,02 7:30:00,28 ,0.207415,29.86662,6.228587,7.744036
sgpcmbeC1.c1,2005,02 8:30:00,28 ,0.004339,192.6926,55.30879,65.07741
sgpcmbeC1.c1,2005,02 9:30:00,28 ,0.027193,365.9952,130.4828,139.2207
sgpcmbeC1.c1,2005,0210:30:00,28 ,0.230866,521.2899,207.0332,203.8391
sgpcmbeC1.c1,2005,0211:30:00,28 ,0.197884,604.4158, 262.262,248.6606
sgpcmbeC1.c1,2005,0212:30:00,28 ,0.317535, 646.413,263.3289,261.3063
sgpcmbeC1.c1,2005,0213:30:00,28 ,0.014252,649.9852,262.8293, 266.875
sgpcmbeC1.c1,2005,0214:30:00,28 ,0.023293,527.2491,197.9813,216.5623
sgpcmbeC1.c1,2005,0215:30:00,28 ,0.005875,400.6319,139.8228,154.5586
sgpcmbeC1.c1,2005,0216:30:00,28 ,0.006882,255.9021,79.43885,96.44737
sgpcmbeC1.c1,2005,0217:30:00,28 ,       0,107.2449,21.13082,28.49528
sgpcmbeC1.c1,2005,0218:30:00,28 ,0.181398, 4.63665,1.413204,0.770438
sgpcmbeC1.c1,2005,0219:30:00,28 , 0.31872,2.498868,1.593428,0.574214
sgpcmbeC1.c1,2005,0220:30:00,28 , 0.00988,2.424709,1.423458,0.651512
sgpcmbeC1.c1,2005,0221:30:00,28 ,0.140598,2.675545,1.515911,0.592701
sgpcmbeC1.c1,2005,0222:30:00,28 ,0.278019,2.611439,1.505162,  0.6622
sgpcmbeC1.c1,2005,0223:30:00,28 ,       0,2.183428,1.235231,0.681863