datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,04 0:30:00,30 ,       0,1.745316,0.187681, 0.41066
sgpcmbeC1.c1,2005,04 1:30:00,30 ,       0,1.614432,0.150712, 0.35137
sgpcmbeC1.c1,2005,04 2:30:00,30 ,       0,1.533457,0.137214,0.343761
sgpcmbeC1.c1,2005,04 3:30:00,30 ,       0,0.510142,0.071956,0.165824
sgpcmbeC1.c1,2005,04 4:30:00,30 ,       0,1.200452,0.059812,0.223323
sgpcmbeC1.c1,2005,04 5:30:00,30 ,       0,5.997988,1.579405,1.766328
sgpcmbeC1.c1,2005,04 6:30:00,30 ,5.689284,52.55128,31.41672,13.10026
sgpcmbeC1.c1,2005,04 7:30:00,30 ,25.25191,152.1385,81.56271,30.57732
sgpcmbeC1.c1,2005,04 8:30:00,30 ,50.39725,238.6832,137.5772, 55.4735
sgpcmbeC1.c1,2005,04 9:30:00,30 , 77.2869,384.4555,185.6214,96.05547
sgpcmbeC1.c1,2005,0410:30:00,30 ,54.59177,530.9972,220.6063,131.5922
sgpcmbeC1.c1,2005,0411:30:00,30 ,83.77017,498.1866,243.2995, 126.762
sgpcmbeC1.c1,2005,0412:30:00,30 , 84.9296,535.8609,264.6288,139.4028
sgpcmbeC1.c1,2005,0413:30:00,30 ,79.79192,499.3739,264.9914,149.6258
sgpcmbeC1.c1,2005,0414:30:00,30 ,82.75576,456.2584,227.1835,125.0588
sgpcmbeC1.c1,2005,0415:30:00,30 ,64.29188,375.3493,210.5937,101.1423
sgpcmbeC1.c1,2005,0416:30:00,30 ,71.59376,261.1039,164.4832,60.53381
sgpcmbeC1.c1,2005,0417:30:00,30 , 55.5392,161.4757,98.83382,29.50355
sgpcmbeC1.c1,2005,0418:30:00,30 ,7.117186,70.37227,37.67538,13.40339
sgpcmbeC1.c1,2005,0419:30:00,30 ,       0,5.918024,1.658979, 1.48534
sgpcmbeC1.c1,2005,0420:30:00,30 ,       0,1.909098,0.270675,0.551479
sgpcmbeC1.c1,2005,0421:30:00,30 ,       0,1.671893,0.332846,0.587782
sgpcmbeC1.c1,2005,0422:30:00,30 ,       0,1.676163,0.214286,0.393396
sgpcmbeC1.c1,2005,0423:30:00,30 ,       0,1.176859,0.124639,0.297492