datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1997,05 0:30:00,31 ,       0,0.515609,0.046446,0.144919
sgpcmbeC1.c1,1997,05 1:30:00,31 ,       0,1.211534,0.039082,0.217598
sgpcmbeC1.c1,1997,05 2:30:00,31 ,       0,0.585507,0.018887, 0.10516
sgpcmbeC1.c1,1997,05 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,05 4:30:00,31 ,       0,0.903077,0.029132,0.162197
sgpcmbeC1.c1,1997,05 5:30:00,31 ,       0,26.18574,11.92363,7.799943
sgpcmbeC1.c1,1997,05 6:30:00,31 ,6.320745, 83.6535,45.12567,20.44424
sgpcmbeC1.c1,1997,05 7:30:00,31 , 7.07724,149.8462,62.47438,28.92982
sgpcmbeC1.c1,1997,05 8:30:00,31 ,33.37488,216.9427,76.90697,38.64911
sgpcmbeC1.c1,1997,05 9:30:00,31 ,13.92395,223.2183,83.87375,47.18471
sgpcmbeC1.c1,1997,0510:30:00,30 ,28.47779,261.1045,87.14728,65.45738
sgpcmbeC1.c1,1997,0511:30:00,30 ,12.44458,320.1336,108.2701,90.50445
sgpcmbeC1.c1,1997,0512:30:00,30 ,3.245295,352.4266,124.5696,105.6354
sgpcmbeC1.c1,1997,0513:30:00,30 ,18.71319,368.4732,142.7307,114.2899
sgpcmbeC1.c1,1997,0514:30:00,30 ,30.21595,345.5339,124.0367,103.8448
sgpcmbeC1.c1,1997,0515:30:00,30 ,  37.547,  246.66,102.6714,64.68935
sgpcmbeC1.c1,1997,0516:30:00,30 ,27.22601,262.2141, 92.5723, 54.7763
sgpcmbeC1.c1,1997,0517:30:00,30 ,14.10521,126.2095,74.96596,27.86827
sgpcmbeC1.c1,1997,0518:30:00,30 ,15.16191,74.45528,46.33258,16.07406
sgpcmbeC1.c1,1997,0519:30:00,30 ,1.741395,22.62717,10.99535,6.054885
sgpcmbeC1.c1,1997,0520:30:00,30 ,       0,0.533036,0.017768,0.097319
sgpcmbeC1.c1,1997,0521:30:00,30 ,       0,1.245968,0.041532,0.227482
sgpcmbeC1.c1,1997,0522:30:00,30 ,       0,1.562647,0.052088,0.285299
sgpcmbeC1.c1,1997,0523:30:00,30 ,       0,0.611414,0.034927,0.134892