datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,03 0:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,03 1:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,03 2:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,03 3:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,03 4:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,03 5:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,03 6:30:00,31 ,       0,18.02144,3.886986,5.293127
sgpcmbeC1.c1,2003,03 7:30:00,31 ,10.13384, 98.1461,40.41887, 22.2803
sgpcmbeC1.c1,2003,03 8:30:00,31 ,27.36121,168.6024,96.28944,37.82337
sgpcmbeC1.c1,2003,03 9:30:00,31 , 40.7414,321.2445,149.0896,64.22954
sgpcmbeC1.c1,2003,0310:30:00,31 ,61.48876,454.9362,197.0997,104.2932
sgpcmbeC1.c1,2003,0311:30:00,31 ,69.00579,448.2574,229.2424,126.0248
sgpcmbeC1.c1,2003,0312:30:00,31 ,83.83432,426.6325,214.5274,120.6419
sgpcmbeC1.c1,2003,0313:30:00,31 ,85.63731,450.9095,201.2971,110.4559
sgpcmbeC1.c1,2003,0314:30:00,31 ,79.22795,358.2598,181.6752,87.86255
sgpcmbeC1.c1,2003,0315:30:00,31 ,  38.253,316.5698,154.2297,77.32518
sgpcmbeC1.c1,2003,0316:30:00,31 ,17.61389,237.0534,114.5478,48.91848
sgpcmbeC1.c1,2003,0317:30:00,31 ,22.82224,125.6807,68.17498, 26.7887
sgpcmbeC1.c1,2003,0318:30:00,31 ,0.691548,27.90392,12.45811,7.014165
sgpcmbeC1.c1,2003,0319:30:00,31 ,       0,0.034034,0.001098,0.006113
sgpcmbeC1.c1,2003,0320:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0321:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0322:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0323:30:00,26 ,       0,       0,       0,       0