datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,05 0:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,05 1:30:00,28 ,       0, 0.10631,0.003797,0.020091
sgpcmbeC1.c1,2007,05 2:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,05 3:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,05 4:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,05 5:30:00,29 ,       0,8.599857,2.094311,2.375391
sgpcmbeC1.c1,2007,05 6:30:00,29 ,0.031602,48.85447,18.24331,17.16735
sgpcmbeC1.c1,2007,05 7:30:00,29 ,0.768548,95.32305,39.33763,  34.523
sgpcmbeC1.c1,2007,05 8:30:00,29 ,3.940118,132.6886,63.26606, 49.0331
sgpcmbeC1.c1,2007,05 9:30:00,29 , 10.5063,155.5347,76.89943,51.94086
sgpcmbeC1.c1,2007,0510:30:00,29 ,7.657188,183.9537,101.6027,52.12807
sgpcmbeC1.c1,2007,0511:30:00,29 ,26.94052,180.9986,121.3266,45.83794
sgpcmbeC1.c1,2007,0512:30:00,29 ,13.74257,182.6041,125.0906,46.24829
sgpcmbeC1.c1,2007,0513:30:00,30 , 6.61832,180.5338,127.4221,48.45172
sgpcmbeC1.c1,2007,0514:30:00,30 ,16.57056,167.7435, 115.548,49.14667
sgpcmbeC1.c1,2007,0515:30:00,30 ,13.72829,154.0358,104.7305,40.53526
sgpcmbeC1.c1,2007,0516:30:00,30 ,7.526535,122.1632,79.05405,32.47591
sgpcmbeC1.c1,2007,0517:30:00,30 ,7.560418,92.76627,52.72382,25.40218
sgpcmbeC1.c1,2007,0518:30:00,30 ,2.467749,41.66042,20.88216, 12.5749
sgpcmbeC1.c1,2007,0519:30:00,30 ,       0,4.463932,1.490369, 1.13857
sgpcmbeC1.c1,2007,0520:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0521:30:00,30 ,       0,0.020224,0.000674,0.003692
sgpcmbeC1.c1,2007,0522:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0523:30:00,26 ,       0,0.000249,9.593E-6,0.000049