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 ,       0,14.11437,3.088509,4.756191
sgpcmbeC1.c1,2007,06 6:30:00,30 ,       0,50.98802,17.09912,19.44681
sgpcmbeC1.c1,2007,06 7:30:00,30 , 0.05288,100.3765,32.59432,32.70242
sgpcmbeC1.c1,2007,06 8:30:00,30 ,0.057633,166.5255,58.06669,48.95028
sgpcmbeC1.c1,2007,06 9:30:00,30 ,   0.174,223.5596,77.23209,80.66738
sgpcmbeC1.c1,2007,0610:30:00,29 ,0.103228,285.9464, 115.106,98.95105
sgpcmbeC1.c1,2007,0611:30:00,29 ,0.074247,276.1441,114.3099,94.46991
sgpcmbeC1.c1,2007,0612:30:00,29 ,0.226108,329.6224,122.4563,123.4262
sgpcmbeC1.c1,2007,0613:30:00,28 , 0.08249,340.0536,131.8505,120.8535
sgpcmbeC1.c1,2007,0614:30:00,29 ,0.014855,  307.95,124.7982,108.9539
sgpcmbeC1.c1,2007,0615:30:00,29 ,0.163651,262.9619,137.2138,91.70154
sgpcmbeC1.c1,2007,0616:30:00,30 ,0.115818,239.0697,85.56953,71.80269
sgpcmbeC1.c1,2007,0617:30:00,30 ,       0,123.8456,44.33165,36.82516
sgpcmbeC1.c1,2007,0618:30:00,30 ,       0,47.60287,20.91846,18.62049
sgpcmbeC1.c1,2007,0619:30:00,30 ,       0,16.83407,5.206462,5.403259
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