datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,05 0:30:00,31 ,0.883279,2.308078,1.734966,0.341103
sgpcmbeC1.c1,2005,05 1:30:00,31 ,0.481661,2.373328,1.612178,0.519614
sgpcmbeC1.c1,2005,05 2:30:00,31 ,0.603215,2.424752,1.708178,0.422617
sgpcmbeC1.c1,2005,05 3:30:00,31 ,0.756672,2.449043,1.719416,  0.4665
sgpcmbeC1.c1,2005,05 4:30:00,31 ,1.021364,2.351695,1.673576,0.383586
sgpcmbeC1.c1,2005,05 5:30:00,31 ,0.007663,8.426199,2.444585,2.432698
sgpcmbeC1.c1,2005,05 6:30:00,31 ,0.057892,125.3469,39.89295,42.24883
sgpcmbeC1.c1,2005,05 7:30:00,31 ,0.256954,302.3128,123.9613,112.8363
sgpcmbeC1.c1,2005,05 8:30:00,31 ,0.494015,502.4908,214.2796,203.2372
sgpcmbeC1.c1,2005,05 9:30:00,31 ,0.213978,692.8704,310.2187,261.8382
sgpcmbeC1.c1,2005,0510:30:00,30 ,2.245056,818.5862,378.0871,297.5972
sgpcmbeC1.c1,2005,0511:30:00,31 ,1.694244,902.9698,402.8721,342.5509
sgpcmbeC1.c1,2005,0512:30:00,31 ,0.077477,920.2961,446.3599, 354.779
sgpcmbeC1.c1,2005,0513:30:00,31 ,0.189591,883.4105,461.0334,340.0884
sgpcmbeC1.c1,2005,0514:30:00,31 ,       0,786.5909,408.0625,297.4451
sgpcmbeC1.c1,2005,0515:30:00,31 ,       0,643.6843,335.9988,234.9259
sgpcmbeC1.c1,2005,0516:30:00,31 ,       0, 475.005,231.9034,171.6784
sgpcmbeC1.c1,2005,0517:30:00,31 ,0.001347,286.9919,131.2392,98.29631
sgpcmbeC1.c1,2005,0518:30:00,31 ,       0,111.8487,44.58958,33.80591
sgpcmbeC1.c1,2005,0519:30:00,31 ,0.393835,8.476273,2.229983,2.060221
sgpcmbeC1.c1,2005,0520:30:00,31 ,1.041813,2.631504,1.739093,0.333617
sgpcmbeC1.c1,2005,0521:30:00,31 ,1.015648,2.546769,1.814754,0.424051
sgpcmbeC1.c1,2005,0522:30:00,31 ,0.995858,2.443695,1.875446,0.363003
sgpcmbeC1.c1,2005,0523:30:00,31 ,1.090651,2.465043,  1.7762, 0.40561