datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2001,04 0:30:00,30 ,       0,1.067591,0.035586,0.194915
sgpcmbeC1.c1,2001,04 1:30:00,29 ,       0,1.974759,0.070349,0.366471
sgpcmbeC1.c1,2001,04 2:30:00,30 ,       0,0.570113,0.019004,0.104088
sgpcmbeC1.c1,2001,04 3:30:00,30 ,       0,0.156135,0.005204,0.028506
sgpcmbeC1.c1,2001,04 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,04 5:30:00,30 ,       0,0.440785,0.056544,0.115956
sgpcmbeC1.c1,2001,04 6:30:00,30 ,0.005059,58.41611,16.45171,18.25857
sgpcmbeC1.c1,2001,04 7:30:00,30 ,0.041572,227.4189,93.24481,91.35106
sgpcmbeC1.c1,2001,04 8:30:00,30 ,0.031807,451.2181,202.7781,179.0713
sgpcmbeC1.c1,2001,04 9:30:00,30 ,0.198563,629.7614,297.6018,259.0062
sgpcmbeC1.c1,2001,0410:30:00,30 ,0.269775,775.5452,  347.72, 322.792
sgpcmbeC1.c1,2001,0411:30:00,30 ,0.314713, 868.732,380.0414,348.4551
sgpcmbeC1.c1,2001,0412:30:00,30 ,0.518204,897.9604,370.5417,359.2314
sgpcmbeC1.c1,2001,0413:30:00,30 ,0.013168,   859.4,350.7418,332.1748
sgpcmbeC1.c1,2001,0414:30:00,30 ,0.313171,765.6044,352.1399, 281.344
sgpcmbeC1.c1,2001,0415:30:00,30 ,0.294678,615.1375,318.8386,221.1485
sgpcmbeC1.c1,2001,0416:30:00,30 ,0.050507,426.8895,200.3338,162.1324
sgpcmbeC1.c1,2001,0417:30:00,30 ,       0,221.0167, 99.7798,83.20634
sgpcmbeC1.c1,2001,0418:30:00,30 ,       0,50.40272,17.99406,17.18607
sgpcmbeC1.c1,2001,0419:30:00,29 ,       0,0.532997,0.094165,0.156985
sgpcmbeC1.c1,2001,0420:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0421:30:00,29 ,       0,0.384073,0.013244,0.071321
sgpcmbeC1.c1,2001,0422:30:00,30 ,       0,1.889286,0.062976,0.344935
sgpcmbeC1.c1,2001,0423:30:00,30 ,       0,2.199138,0.073305,0.401506