datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,05 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,05 1:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,05 2:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,05 3:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,05 4:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,05 5:30:00,31 ,       0,21.03595,8.515135,5.320564
sgpcmbeC1.c1,2004,05 6:30:00,31 ,0.702006,156.7944,72.63581,38.70945
sgpcmbeC1.c1,2004,05 7:30:00,25 ,15.91713,309.1672,124.9447,63.26149
sgpcmbeC1.c1,2004,05 8:30:00,27 ,47.06944,532.9574,213.5899,131.9171
sgpcmbeC1.c1,2004,05 9:30:00,25 ,47.93192,476.7187,240.9467,130.6273
sgpcmbeC1.c1,2004,0510:30:00,25 , 53.8126,868.7907,314.9594,204.7329
sgpcmbeC1.c1,2004,0511:30:00,25 ,81.52176,654.2225,299.7787,170.0387
sgpcmbeC1.c1,2004,0512:30:00,26 ,71.43604,620.9832,274.5716,163.0107
sgpcmbeC1.c1,2004,0513:30:00,27 ,19.34266,665.7468,255.6611,163.6489
sgpcmbeC1.c1,2004,0514:30:00,27 ,16.69021,693.7983,242.8494,170.3629
sgpcmbeC1.c1,2004,0515:30:00,25 ,14.02577,  379.13,178.7958,99.30683
sgpcmbeC1.c1,2004,0516:30:00,27 ,35.43125,498.1526,179.0556,110.0357
sgpcmbeC1.c1,2004,0517:30:00,25 ,19.26409,183.5388,106.1453,42.09686
sgpcmbeC1.c1,2004,0518:30:00,31 ,16.60379,107.8463, 61.7686,21.35277
sgpcmbeC1.c1,2004,0519:30:00,31 ,0.450916,14.26004,6.508598, 3.96445
sgpcmbeC1.c1,2004,0520:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0521:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0522:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0523:30:00,31 ,       0,       0,       0,       0