datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,04 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,04 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,04 2:30:00,30 ,       0,1.376306,0.045877,0.251278
sgpcmbeC1.c1,1998,04 3:30:00,30 ,       0,1.725862,0.057529,0.315098
sgpcmbeC1.c1,1998,04 4:30:00,30 ,       0,   0.386,0.012867,0.070474
sgpcmbeC1.c1,1998,04 5:30:00,30 ,       0,6.522085,1.211854,1.713866
sgpcmbeC1.c1,1998,04 6:30:00,30 ,4.377438,48.99318,15.08766,7.825929
sgpcmbeC1.c1,1998,04 7:30:00,30 ,6.012808,60.10289,18.70689,15.65079
sgpcmbeC1.c1,1998,04 8:30:00,30 ,3.425337,88.31239,23.94699,22.92915
sgpcmbeC1.c1,1998,04 9:30:00,30 ,1.632246,68.15948,21.74499,20.49325
sgpcmbeC1.c1,1998,0410:30:00,30 ,1.589796,112.3734,30.10581,32.83023
sgpcmbeC1.c1,1998,0411:30:00,30 ,0.568702,88.18454,27.49526,28.42688
sgpcmbeC1.c1,1998,0412:30:00,30 ,0.806392,108.0757,28.90389,29.36114
sgpcmbeC1.c1,1998,0413:30:00,30 ,1.162111,157.3393,36.88321,43.86991
sgpcmbeC1.c1,1998,0414:30:00,30 ,1.113979,115.8932, 31.8142,31.05107
sgpcmbeC1.c1,1998,0415:30:00,30 ,1.389777,83.80292,27.39754,23.27469
sgpcmbeC1.c1,1998,0416:30:00,30 ,2.893864, 67.8442,20.45127,16.58844
sgpcmbeC1.c1,1998,0417:30:00,30 ,4.149784,52.13722,15.89128,10.86636
sgpcmbeC1.c1,1998,0418:30:00,30 ,2.513684,28.23793,14.73379,5.867358
sgpcmbeC1.c1,1998,0419:30:00,30 ,       0,6.344965,1.661466,1.533383
sgpcmbeC1.c1,1998,0420:30:00,30 ,       0,1.278389,0.042613,0.233401
sgpcmbeC1.c1,1998,0421:30:00,30 ,       0,0.587038,0.030006,0.119722
sgpcmbeC1.c1,1998,0422:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0423:30:00,30 ,       0,1.436765,0.068788,0.282557