datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1997,04 0:30:00,30 ,       0,0.066145,0.002205,0.012076
sgpcmbeC1.c1,1997,04 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,04 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,04 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,04 4:30:00,30 ,       0,0.002116,0.000071,0.000386
sgpcmbeC1.c1,1997,04 5:30:00,30 ,       0,1.270742,0.102734, 0.31144
sgpcmbeC1.c1,1997,04 6:30:00,30 ,0.000406,85.28568,18.48826, 24.8533
sgpcmbeC1.c1,1997,04 7:30:00,30 ,0.004093, 238.712,86.71985,93.27991
sgpcmbeC1.c1,1997,04 8:30:00,30 ,0.011711,432.0792,166.5895,178.7685
sgpcmbeC1.c1,1997,04 9:30:00,30 ,       0,612.5533,250.9865,273.9988
sgpcmbeC1.c1,1997,0410:30:00,30 ,0.028809,768.7472,315.1458,345.1897
sgpcmbeC1.c1,1997,0411:30:00,30 , 0.31501, 845.181,365.6192,360.8151
sgpcmbeC1.c1,1997,0412:30:00,30 ,0.060383,871.8679,369.4907,351.2584
sgpcmbeC1.c1,1997,0413:30:00,30 ,       0,836.4984,383.3253,345.7318
sgpcmbeC1.c1,1997,0414:30:00,30 ,       0, 737.009,330.3224,301.5047
sgpcmbeC1.c1,1997,0415:30:00,30 ,       0,606.3275, 275.955,250.5445
sgpcmbeC1.c1,1997,0416:30:00,30 ,0.000141,431.1432,204.4095,185.9538
sgpcmbeC1.c1,1997,0417:30:00,30 ,       0,252.7458,100.7843, 96.7122
sgpcmbeC1.c1,1997,0418:30:00,30 ,       0,72.31132,21.80399,21.09851
sgpcmbeC1.c1,1997,0419:30:00,30 ,       0,1.127113,0.129278,0.282711
sgpcmbeC1.c1,1997,0420:30:00,30 ,       0,0.151303,0.005565, 0.02761
sgpcmbeC1.c1,1997,0421:30:00,30 ,       0,0.009345,0.000311,0.001706
sgpcmbeC1.c1,1997,0422:30:00,30 ,       0,0.020958,0.000699,0.003826
sgpcmbeC1.c1,1997,0423:30:00,30 ,       0,0.039552,0.001318,0.007221