datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1997,07 0:30:00,31 ,       0,1.012957,0.049417,0.201636
sgpcmbeC1.c1,1997,07 1:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,07 2:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,07 3:30:00,31 ,       0,1.069952,0.034515,0.192169
sgpcmbeC1.c1,1997,07 4:30:00,31 ,       0, 1.07688,0.034738,0.193413
sgpcmbeC1.c1,1997,07 5:30:00,31 ,1.153167,28.15244,12.59758,7.400014
sgpcmbeC1.c1,1997,07 6:30:00,31 ,2.094389,59.65575,41.43121, 15.8106
sgpcmbeC1.c1,1997,07 7:30:00,31 ,1.650057,155.6187,58.81866,33.36975
sgpcmbeC1.c1,1997,07 8:30:00,31 ,12.39161,161.4916, 68.5523,37.77462
sgpcmbeC1.c1,1997,07 9:30:00,31 ,5.677615,146.7172,66.49474, 35.4728
sgpcmbeC1.c1,1997,0710:30:00,31 ,11.47469,245.1855,93.38391,66.87649
sgpcmbeC1.c1,1997,0711:30:00,31 ,14.76179,335.2669,119.0397,100.4472
sgpcmbeC1.c1,1997,0712:30:00,31 ,2.706964,259.5542,99.32668,92.83372
sgpcmbeC1.c1,1997,0713:30:00,31 ,8.568416,302.0272,120.4236,103.4195
sgpcmbeC1.c1,1997,0714:30:00,31 ,14.62105,227.1774,85.94093,64.22634
sgpcmbeC1.c1,1997,0715:30:00,31 ,29.58458,237.6994,87.08562, 51.3388
sgpcmbeC1.c1,1997,0716:30:00,31 , 24.2134,204.6526,76.91152,39.61581
sgpcmbeC1.c1,1997,0717:30:00,31 ,5.015633,131.8084,71.14502,32.06921
sgpcmbeC1.c1,1997,0718:30:00,31 ,9.721586, 87.4971,48.71376,19.61562
sgpcmbeC1.c1,1997,0719:30:00,31 , 9.76096, 42.8628,21.98354,8.293472
sgpcmbeC1.c1,1997,0720:30:00,31 ,       0,0.845815,0.043503,0.174119
sgpcmbeC1.c1,1997,0721:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,0722:30:00,31 ,       0,0.653429,0.041346,0.160076
sgpcmbeC1.c1,1997,0723:30:00,31 ,       0,0.466806,0.015058,0.083841