datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2001,05 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,05 1:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,05 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,05 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,05 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,05 5:30:00,31 ,       0,15.04717,4.048037,5.033708
sgpcmbeC1.c1,2001,05 6:30:00,31 ,       0,50.82939, 24.6777,21.00355
sgpcmbeC1.c1,2001,05 7:30:00,30 ,0.149457,104.4596,45.54198,29.71327
sgpcmbeC1.c1,2001,05 8:30:00,30 ,0.474253,269.9889,66.94262,62.29596
sgpcmbeC1.c1,2001,05 9:30:00,31 ,0.305276,227.1969,63.95151,50.82358
sgpcmbeC1.c1,2001,0510:30:00,31 ,0.913083,296.4112,93.27801,85.14646
sgpcmbeC1.c1,2001,0511:30:00,31 , 1.17808,323.9128,99.81563,108.3545
sgpcmbeC1.c1,2001,0512:30:00,31 ,0.207562,352.1571,103.8046,116.9162
sgpcmbeC1.c1,2001,0513:30:00,31 ,0.578038,357.8266,103.7288,110.2898
sgpcmbeC1.c1,2001,0514:30:00,31 ,0.010813,337.1419,122.6233,107.9839
sgpcmbeC1.c1,2001,0515:30:00,31 ,       0,258.4303,106.8341,83.37519
sgpcmbeC1.c1,2001,0516:30:00,30 ,       0,233.3216,88.25942,68.23386
sgpcmbeC1.c1,2001,0517:30:00,30 ,       0,109.8988,44.12909,30.71795
sgpcmbeC1.c1,2001,0518:30:00,31 ,       0,60.87318,28.68849,18.59837
sgpcmbeC1.c1,2001,0519:30:00,31 ,       0,11.37211,2.695263,3.341134
sgpcmbeC1.c1,2001,0520:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0521:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0522:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0523:30:00,30 ,       0,       0,       0,       0