datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,01 0:30:00,29 ,       0, 0.19885,0.027749,0.064444
sgpcmbeC1.c1,2006,01 1:30:00,27 ,       0,0.066141,0.004118,0.015122
sgpcmbeC1.c1,2006,01 2:30:00,26 ,       0,0.176199, 0.01058,0.038706
sgpcmbeC1.c1,2006,01 3:30:00,26 ,       0,0.188121,0.017709,0.048736
sgpcmbeC1.c1,2006,01 4:30:00,28 ,       0,0.370461,0.023679,0.077035
sgpcmbeC1.c1,2006,01 5:30:00,29 ,       0,0.169985,0.022075,0.050223
sgpcmbeC1.c1,2006,01 6:30:00,27 ,       0,0.169974,0.013212,0.038808
sgpcmbeC1.c1,2006,01 7:30:00,31 ,0.077668,7.595194,  2.8593,1.888655
sgpcmbeC1.c1,2006,01 8:30:00,31 ,2.217489,38.11369,13.45126,6.723268
sgpcmbeC1.c1,2006,01 9:30:00,31 ,1.266437,94.01736,17.47636,17.54776
sgpcmbeC1.c1,2006,0110:30:00,31 ,2.955106,68.73084,17.79328, 15.2277
sgpcmbeC1.c1,2006,0111:30:00,31 , 4.31457,69.71182,15.80635,14.39146
sgpcmbeC1.c1,2006,0112:30:00,31 ,0.647851, 70.7302,10.54621,13.79931
sgpcmbeC1.c1,2006,0113:30:00,31 ,3.031966, 51.4584,14.96331,13.35089
sgpcmbeC1.c1,2006,0114:30:00,31 ,5.989371,51.95699,16.53681,12.29323
sgpcmbeC1.c1,2006,0115:30:00,31 ,4.735937,128.4726, 17.9076,21.73871
sgpcmbeC1.c1,2006,0116:30:00,31 , 1.74183,51.53382,16.39418,9.357152
sgpcmbeC1.c1,2006,0117:30:00,31 ,0.769056,20.44426,7.482155,4.561616
sgpcmbeC1.c1,2006,0118:30:00,20 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0119:30:00,23 ,       0,0.129587,0.005634,0.027021
sgpcmbeC1.c1,2006,0120:30:00,26 ,       0,0.149856,0.005764,0.029389
sgpcmbeC1.c1,2006,0121:30:00,27 ,       0,0.893249,0.048985,0.174132
sgpcmbeC1.c1,2006,0122:30:00,26 ,       0,0.136765, 0.00966,0.034272
sgpcmbeC1.c1,2006,0123:30:00,24 ,       0,       0,       0,       0