datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,02 0:30:00,20 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,02 1:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,02 2:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,02 3:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,02 4:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,02 5:30:00,20 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,02 6:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,02 7:30:00,28 ,1.257063,36.59439,13.15887,8.623996
sgpcmbeC1.c1,2007,02 8:30:00,28 ,13.50571,129.5534,58.28007,28.81804
sgpcmbeC1.c1,2007,02 9:30:00,28 ,18.38196,262.1992,108.5075, 66.6288
sgpcmbeC1.c1,2007,0210:30:00,28 ,21.60784,352.2335,129.4751,85.64968
sgpcmbeC1.c1,2007,0211:30:00,28 ,62.48767,400.6132,148.2162,97.71757
sgpcmbeC1.c1,2007,0212:30:00,28 ,66.26568, 396.772,154.7345,101.3006
sgpcmbeC1.c1,2007,0213:30:00,28 ,65.19578,390.3016,159.8298,96.89813
sgpcmbeC1.c1,2007,0214:30:00,28 ,61.61208,342.6599,158.4927,91.84077
sgpcmbeC1.c1,2007,0215:30:00,28 ,55.48954,257.7792,134.8559,65.52352
sgpcmbeC1.c1,2007,0216:30:00,28 ,40.06657,160.7546,88.13602,37.18432
sgpcmbeC1.c1,2007,0217:30:00,28 ,7.135776,69.55886,32.54477,14.49612
sgpcmbeC1.c1,2007,0218:30:00,28 ,       0,5.126947,1.188064,1.476208
sgpcmbeC1.c1,2007,0219:30:00,23 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0220:30:00,21 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0221:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0222:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0223:30:00,20 ,       0,       0,       0,       0