datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,07 0:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,07 1:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,07 2:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,07 3:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,07 4:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,07 5:30:00,27 ,2.667145,29.95897,15.56108, 6.58711
sgpcmbeC1.c1,2006,07 6:30:00,27 ,9.159041,92.01619,47.11576,19.15209
sgpcmbeC1.c1,2006,07 7:30:00,27 ,5.397398,129.5498,59.63925,22.17011
sgpcmbeC1.c1,2006,07 8:30:00,28 ,23.05386,182.7478,65.36734,34.73523
sgpcmbeC1.c1,2006,07 9:30:00,28 ,43.92165,256.7104,76.75009, 51.2958
sgpcmbeC1.c1,2006,0710:30:00,28 ,15.27994,236.3327,54.97585,45.68741
sgpcmbeC1.c1,2006,0711:30:00,28 ,  16.841, 252.452,75.92917,82.98283
sgpcmbeC1.c1,2006,0712:30:00,28 ,3.609556,320.1087,116.1715,103.7263
sgpcmbeC1.c1,2006,0713:30:00,28 ,13.26571,377.1698,125.9228,118.3812
sgpcmbeC1.c1,2006,0714:30:00,28 ,27.08348,273.6506,115.6715,95.12521
sgpcmbeC1.c1,2006,0715:30:00,28 ,21.35042,253.4237,100.6376,74.80054
sgpcmbeC1.c1,2006,0716:30:00,28 ,21.68982,175.9348,  76.734,37.92612
sgpcmbeC1.c1,2006,0717:30:00,28 ,16.71411,122.9783,68.32707,23.21118
sgpcmbeC1.c1,2006,0718:30:00,28 ,12.30225,76.98373,50.69617, 14.1338
sgpcmbeC1.c1,2006,0719:30:00,28 ,1.886804,51.80335,21.63299, 9.84529
sgpcmbeC1.c1,2006,0720:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0721:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0722:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0723:30:00,27 ,       0,       0,       0,       0