datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,06 0:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,06 1:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,06 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,06 3:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,06 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,06 5:30:00,30 ,       0,11.54228,4.019053,3.273654
sgpcmbeC1.c1,2007,06 6:30:00,30 ,0.211171,56.12033,23.51848,16.09886
sgpcmbeC1.c1,2007,06 7:30:00,30 ,2.039948,102.5636,48.60788, 30.7918
sgpcmbeC1.c1,2007,06 8:30:00,30 ,6.545487, 137.918,78.65173,40.14786
sgpcmbeC1.c1,2007,06 9:30:00,30 ,13.70602, 161.259,90.98549,45.06025
sgpcmbeC1.c1,2007,0610:30:00,29 ,9.282762,183.4213,115.0192, 54.3201
sgpcmbeC1.c1,2007,0611:30:00,29 ,4.040132, 196.913, 121.924,59.47209
sgpcmbeC1.c1,2007,0612:30:00,29 ,8.794465,202.1758,125.7176,57.04662
sgpcmbeC1.c1,2007,0613:30:00,28 ,9.106395,197.9562,118.9947,58.31551
sgpcmbeC1.c1,2007,0614:30:00,29 ,4.080827, 185.379,114.1512,56.21618
sgpcmbeC1.c1,2007,0615:30:00,29 ,5.614426,166.2124, 107.857,41.41552
sgpcmbeC1.c1,2007,0616:30:00,30 , 7.09703, 139.344,80.15132,42.75764
sgpcmbeC1.c1,2007,0617:30:00,30 ,0.653496,100.9306,49.10137,  31.768
sgpcmbeC1.c1,2007,0618:30:00,30 ,       0,50.46902, 26.3313,16.90717
sgpcmbeC1.c1,2007,0619:30:00,30 ,       0,9.776583,5.014127,3.412865
sgpcmbeC1.c1,2007,0620:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0621:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0622:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0623:30:00,29 ,       0,       0,       0,       0