datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,04 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,04 1:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,04 2:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,04 3:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,04 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,04 5:30:00,30 ,       0,5.274933,0.694448,1.417855
sgpcmbeC1.c1,2002,04 6:30:00,30 ,       0,118.7514,41.05309,36.39527
sgpcmbeC1.c1,2002,04 7:30:00,30 ,10.85835,332.4565,155.2015,101.7543
sgpcmbeC1.c1,2002,04 8:30:00,30 ,16.34115,547.7894, 295.788,183.4399
sgpcmbeC1.c1,2002,04 9:30:00,30 ,19.37861,735.5255,389.7005,255.9629
sgpcmbeC1.c1,2002,0410:30:00,30 ,25.57149,881.3057,504.8775,312.5975
sgpcmbeC1.c1,2002,0411:30:00,30 ,84.59624,976.8204,601.3907,330.8122
sgpcmbeC1.c1,2002,0412:30:00,30 ,79.47265,1001.262,658.9533,340.9671
sgpcmbeC1.c1,2002,0413:30:00,30 ,81.71927,971.2786,636.2576,318.1113
sgpcmbeC1.c1,2002,0414:30:00,30 ,30.47176,870.6111,577.9536,290.4271
sgpcmbeC1.c1,2002,0415:30:00,30 ,72.71004,715.9714,492.6085,222.6847
sgpcmbeC1.c1,2002,0416:30:00,30 ,29.27187,521.6882,349.0787, 171.003
sgpcmbeC1.c1,2002,0417:30:00,30 ,12.14808,306.2426,183.9891,95.83202
sgpcmbeC1.c1,2002,0418:30:00,30 ,0.413726,122.4256,54.46576,31.20769
sgpcmbeC1.c1,2002,0419:30:00,30 ,       0,3.761932,0.878149,1.133515
sgpcmbeC1.c1,2002,0420:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0421:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0422:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0423:30:00,29 ,       0,       0,       0,       0