datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2001,05 0:30:00,31 ,       0, 5.25744,0.727047, 1.13352
sgpcmbeC1.c1,2001,05 1:30:00,30 ,       0,5.418397,0.792486, 1.15421
sgpcmbeC1.c1,2001,05 2:30:00,31 ,       0,5.164473,0.823809, 1.14334
sgpcmbeC1.c1,2001,05 3:30:00,31 ,       0,2.229644,0.723944,0.783444
sgpcmbeC1.c1,2001,05 4:30:00,30 ,       0,2.477589,0.783305,0.805606
sgpcmbeC1.c1,2001,05 5:30:00,31 ,0.011194,26.16713,11.03829,8.241176
sgpcmbeC1.c1,2001,05 6:30:00,31 ,0.380632,181.7871,104.1289,54.72918
sgpcmbeC1.c1,2001,05 7:30:00,31 ,1.042903,390.4046,257.4008,114.9037
sgpcmbeC1.c1,2001,05 8:30:00,31 , 86.5335,601.1693,425.6901,167.6491
sgpcmbeC1.c1,2001,05 9:30:00,31 ,94.48514,763.3567,569.9805, 202.713
sgpcmbeC1.c1,2001,0510:30:00,31 ,153.1421,887.3676,696.1617,232.2223
sgpcmbeC1.c1,2001,0511:30:00,31 , 39.3766,976.8898,752.7957, 260.554
sgpcmbeC1.c1,2001,0512:30:00,31 ,50.38347,999.5292,751.4461,294.5435
sgpcmbeC1.c1,2001,0513:30:00,31 ,29.75869,966.8549,683.5227,299.0965
sgpcmbeC1.c1,2001,0514:30:00,31 ,22.71511,905.0696,632.0566,265.4754
sgpcmbeC1.c1,2001,0515:30:00,31 ,3.687104,767.1732,506.6331,216.4893
sgpcmbeC1.c1,2001,0516:30:00,31 ,9.008265,581.2254,  373.34,171.0617
sgpcmbeC1.c1,2001,0517:30:00,31 ,15.92536,375.8656,239.3244,106.2343
sgpcmbeC1.c1,2001,0518:30:00,31 ,1.210637,160.1636,93.16709,45.42408
sgpcmbeC1.c1,2001,0519:30:00,31 ,0.010329,18.80791,7.188131,5.466439
sgpcmbeC1.c1,2001,0520:30:00,30 ,       0,4.074617,0.791805,1.090657
sgpcmbeC1.c1,2001,0521:30:00,30 ,       0,3.983778,0.865539,1.172233
sgpcmbeC1.c1,2001,0522:30:00,31 ,       0,4.446728,0.765169,1.116249
sgpcmbeC1.c1,2001,0523:30:00,31 ,       0,5.609735,0.827697, 1.27577