datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,05 0:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,05 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,05 2:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,05 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,05 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,05 5:30:00,31 ,       0,32.21796,10.49458,6.799098
sgpcmbeC1.c1,2006,05 6:30:00,31 ,3.695107,43.38053,16.29874,9.851835
sgpcmbeC1.c1,2006,05 7:30:00,31 ,3.716208, 76.1226,21.08534,18.87444
sgpcmbeC1.c1,2006,05 8:30:00,31 ,2.122973,76.38391,20.93989,19.69515
sgpcmbeC1.c1,2006,05 9:30:00,31 ,1.569461, 132.883,33.02954,34.22678
sgpcmbeC1.c1,2006,0510:30:00,31 ,0.928631,133.5259,35.70579,31.15249
sgpcmbeC1.c1,2006,0511:30:00,31 ,1.138355,100.2827,37.58974,32.45169
sgpcmbeC1.c1,2006,0512:30:00,31 ,1.913425,150.0025,45.88296,37.35872
sgpcmbeC1.c1,2006,0513:30:00,31 ,1.453555,146.3158,52.13564,44.94987
sgpcmbeC1.c1,2006,0514:30:00,31 ,1.717539,185.2003,46.86147,41.42516
sgpcmbeC1.c1,2006,0515:30:00,31 ,0.591014, 111.501,34.93459,28.65842
sgpcmbeC1.c1,2006,0516:30:00,31 ,2.474141,101.5719,27.36513,22.47252
sgpcmbeC1.c1,2006,0517:30:00,31 ,3.766364,70.23631,19.30786,15.92309
sgpcmbeC1.c1,2006,0518:30:00,31 ,4.448052,38.40076,15.20363,7.431262
sgpcmbeC1.c1,2006,0519:30:00,31 ,       0,19.14557,8.266555,4.506259
sgpcmbeC1.c1,2006,0520:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0521:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0522:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0523:30:00,31 ,       0,       0,       0,       0