datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1997,05 0:30:00,31 ,       0,0.002919,0.000094,0.000524
sgpcmbeC1.c1,1997,05 1:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,05 2:30:00,31 ,       0,0.018223,0.000588,0.003273
sgpcmbeC1.c1,1997,05 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,05 4:30:00,31 ,       0,0.060393,0.001948,0.010847
sgpcmbeC1.c1,1997,05 5:30:00,31 ,       0,9.510235,3.194817,2.890019
sgpcmbeC1.c1,1997,05 6:30:00,31 ,1.647532,50.67158,30.21083, 18.0424
sgpcmbeC1.c1,1997,05 7:30:00,31 ,10.87984,100.8061,70.51941,30.64526
sgpcmbeC1.c1,1997,05 8:30:00,31 ,19.59983,140.9487,100.2526,40.21805
sgpcmbeC1.c1,1997,05 9:30:00,31 ,30.85843,170.2139,126.3359,43.19591
sgpcmbeC1.c1,1997,0510:30:00,30 ,66.06405,190.3285,151.1652,39.43461
sgpcmbeC1.c1,1997,0511:30:00,30 , 78.0381, 210.287,162.6603,37.70562
sgpcmbeC1.c1,1997,0512:30:00,30 ,70.81824,211.5737,166.6633,38.04097
sgpcmbeC1.c1,1997,0513:30:00,30 ,85.25499,206.2598,164.6216,31.49578
sgpcmbeC1.c1,1997,0514:30:00,30 ,57.53662,192.7877,146.7878,41.97442
sgpcmbeC1.c1,1997,0515:30:00,30 ,42.72584,165.0533,135.0973,30.76633
sgpcmbeC1.c1,1997,0516:30:00,30 ,34.28904,139.7543,106.6701,30.56222
sgpcmbeC1.c1,1997,0517:30:00,30 ,11.60152,92.58653,69.28586,23.65332
sgpcmbeC1.c1,1997,0518:30:00,30 ,6.284837,46.55938, 29.1682,12.35768
sgpcmbeC1.c1,1997,0519:30:00,30 ,       0,7.049049,2.528888,2.132106
sgpcmbeC1.c1,1997,0520:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,0521:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,0522:30:00,30 ,       0,0.006488,0.000216,0.001185
sgpcmbeC1.c1,1997,0523:30:00,30 ,       0,0.033248,0.001108, 0.00607