datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1997,05 0:30:00,31 ,       0,0.063419,0.005086,0.015992
sgpcmbeC1.c1,1997,05 1:30:00,31 ,       0,0.428632,0.013827,0.076985
sgpcmbeC1.c1,1997,05 2:30:00,31 ,       0,0.104943,0.003385,0.018848
sgpcmbeC1.c1,1997,05 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,05 4:30:00,31 ,       0,0.233541,0.007534,0.041945
sgpcmbeC1.c1,1997,05 5:30:00,31 ,       0,18.37616, 8.07455,5.107392
sgpcmbeC1.c1,1997,05 6:30:00,31 ,7.659252,95.73161,52.89263,18.02641
sgpcmbeC1.c1,1997,05 7:30:00,31 ,48.46523,196.6084,111.4791,44.54738
sgpcmbeC1.c1,1997,05 8:30:00,31 , 82.5098,343.0459,166.2588,80.74175
sgpcmbeC1.c1,1997,05 9:30:00,31 ,95.48849,395.2284,197.9317,99.99634
sgpcmbeC1.c1,1997,0510:30:00,30 , 102.389,502.3559,234.0662,131.0276
sgpcmbeC1.c1,1997,0511:30:00,30 ,109.3416,523.6185,256.2876,139.0845
sgpcmbeC1.c1,1997,0512:30:00,30 ,90.73031,488.9688,261.4641,134.1096
sgpcmbeC1.c1,1997,0513:30:00,30 ,90.69378,493.0678,255.3225,  129.26
sgpcmbeC1.c1,1997,0514:30:00,30 ,89.92592,414.7619,222.6041,115.4106
sgpcmbeC1.c1,1997,0515:30:00,30 ,89.58726,456.9122,200.0842,104.5696
sgpcmbeC1.c1,1997,0516:30:00,30 ,82.19691,284.4609,152.8422,60.51427
sgpcmbeC1.c1,1997,0517:30:00,30 , 61.0948,191.5042,106.1383, 35.8052
sgpcmbeC1.c1,1997,0518:30:00,30 ,16.05266,91.21355,  55.524,14.79238
sgpcmbeC1.c1,1997,0519:30:00,30 , 0.73586,15.72149,7.574921,4.415939
sgpcmbeC1.c1,1997,0520:30:00,30 ,       0,0.068007,0.002267,0.012416
sgpcmbeC1.c1,1997,0521:30:00,30 ,       0,0.304743,0.010158,0.055638
sgpcmbeC1.c1,1997,0522:30:00,30 ,       0,0.561865,0.018729,0.102582
sgpcmbeC1.c1,1997,0523:30:00,30 ,       0,0.064061,0.003474,0.013587