datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,07 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,07 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,07 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,07 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,07 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,07 5:30:00,30 ,       0,6.693274,2.842842,2.166127
sgpcmbeC1.c1,2004,07 6:30:00,30 ,1.755034,43.11677,25.52486,13.39695
sgpcmbeC1.c1,2004,07 7:30:00,30 ,2.534498,94.16683,60.02764,30.94008
sgpcmbeC1.c1,2004,07 8:30:00,30 ,10.64561,129.5005,92.50329,40.27076
sgpcmbeC1.c1,2004,07 9:30:00,30 ,2.365573,159.3533,113.7215,47.30984
sgpcmbeC1.c1,2004,0710:30:00,30 ,9.151022,196.1815,135.3223,52.60151
sgpcmbeC1.c1,2004,0711:30:00,31 ,19.36062,195.1842,148.4449,53.28539
sgpcmbeC1.c1,2004,0712:30:00,31 ,13.84913,200.7905,154.0229,49.67564
sgpcmbeC1.c1,2004,0713:30:00,31 ,15.93942,188.4253,147.3793,  50.106
sgpcmbeC1.c1,2004,0714:30:00,31 ,3.702182,172.0957,128.7488,52.17989
sgpcmbeC1.c1,2004,0715:30:00,31 ,3.775359, 159.877,121.0783,42.27268
sgpcmbeC1.c1,2004,0716:30:00,31 ,10.94131,127.9808,100.2881,33.79963
sgpcmbeC1.c1,2004,0717:30:00,31 ,4.598477,98.66776,71.77121,26.57538
sgpcmbeC1.c1,2004,0718:30:00,31 ,2.018146,57.12305, 34.1442,15.41263
sgpcmbeC1.c1,2004,0719:30:00,31 ,       0,13.73971,7.051439,3.886335
sgpcmbeC1.c1,2004,0720:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0721:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0722:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0723:30:00,31 ,       0,       0,       0,       0