datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,03 0:30:00,31 ,0.252362,29.65154,3.254161,5.890033
sgpcmbeC1.c1,2003,03 1:30:00,31 ,0.135161, 20.3994,2.827634, 4.64771
sgpcmbeC1.c1,2003,03 2:30:00,31 ,0.114861,13.38469,2.099058,2.721508
sgpcmbeC1.c1,2003,03 3:30:00,31 ,0.189571,26.08692,3.906756,6.557646
sgpcmbeC1.c1,2003,03 4:30:00,31 ,0.147317,15.82385,3.028595,4.205218
sgpcmbeC1.c1,2003,03 5:30:00,31 ,0.191982,37.61262,4.983629,8.178745
sgpcmbeC1.c1,2003,03 6:30:00,31 ,0.234603,28.15902, 2.74465,5.088374
sgpcmbeC1.c1,2003,03 7:30:00,31 ,0.304854,18.80327,3.004143,4.191165
sgpcmbeC1.c1,2003,03 8:30:00,31 ,0.251457,24.52554,3.993011,5.199478
sgpcmbeC1.c1,2003,03 9:30:00,31 ,0.382224,19.80685,4.648973,5.216431
sgpcmbeC1.c1,2003,0310:30:00,31 ,0.361001, 20.0858,3.895792,4.252956
sgpcmbeC1.c1,2003,0311:30:00,31 ,0.564894,22.23269, 3.64554,4.741237
sgpcmbeC1.c1,2003,0312:30:00,31 , 0.51224,33.22384,4.321907,6.436972
sgpcmbeC1.c1,2003,0313:30:00,31 ,0.390942,10.07273,2.380966,2.345062
sgpcmbeC1.c1,2003,0314:30:00,31 ,0.419105,15.13458,2.871255,3.707637
sgpcmbeC1.c1,2003,0315:30:00,31 ,0.473266,14.33581, 3.28642,3.802114
sgpcmbeC1.c1,2003,0316:30:00,31 ,0.388952,15.71458,2.524848,3.363494
sgpcmbeC1.c1,2003,0317:30:00,31 ,0.493334,28.53933,3.947486,5.829766
sgpcmbeC1.c1,2003,0318:30:00,31 ,0.580772,10.53847,2.834628,2.393847
sgpcmbeC1.c1,2003,0319:30:00,31 ,0.224894,15.26069,2.671045,3.082046
sgpcmbeC1.c1,2003,0320:30:00,31 ,0.321427, 10.3285,2.238468,2.465459
sgpcmbeC1.c1,2003,0321:30:00,31 ,  0.2626, 31.6783,2.342236,5.669796
sgpcmbeC1.c1,2003,0322:30:00,31 ,0.252608, 19.9473,2.743711,4.634074
sgpcmbeC1.c1,2003,0323:30:00,31 , 0.23088,24.60141,4.415604,6.800876