datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,04 0:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,04 1:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,04 2:30:00,27 ,       0,0.810511,0.030019,0.155983
sgpcmbeC1.c1,2004,04 3:30:00,27 ,       0,0.667574,0.045539,0.164725
sgpcmbeC1.c1,2004,04 4:30:00,28 ,       0,0.393944,0.014069,0.074448
sgpcmbeC1.c1,2004,04 5:30:00,28 ,       0,  8.7173,1.634635, 2.55525
sgpcmbeC1.c1,2004,04 6:30:00,28 ,1.750094,56.80519,29.04083,17.66108
sgpcmbeC1.c1,2004,04 7:30:00,28 ,5.722086,99.33653, 46.6941,24.69997
sgpcmbeC1.c1,2004,04 8:30:00,28 ,10.41496,153.0746, 62.6667,34.09616
sgpcmbeC1.c1,2004,04 9:30:00,29 ,10.08084,135.7513, 53.3957,24.03586
sgpcmbeC1.c1,2004,0410:30:00,29 ,27.92337,224.9362, 79.6397,55.03098
sgpcmbeC1.c1,2004,0411:30:00,29 ,16.55635, 220.272,85.48706,71.11588
sgpcmbeC1.c1,2004,0412:30:00,29 ,2.256811,299.9775, 85.9666,90.08522
sgpcmbeC1.c1,2004,0413:30:00,29 ,17.81522,247.7365,84.79428,68.76489
sgpcmbeC1.c1,2004,0414:30:00,29 ,12.34909,271.6387,90.55093, 68.4389
sgpcmbeC1.c1,2004,0415:30:00,29 ,14.38229,221.1166, 78.5183,44.25904
sgpcmbeC1.c1,2004,0416:30:00,29 , 13.2744,157.0039, 80.1129,39.81606
sgpcmbeC1.c1,2004,0417:30:00,29 ,5.610244,92.22172,50.97842,26.05263
sgpcmbeC1.c1,2004,0418:30:00,29 ,       0,70.10372,30.61467,16.79655
sgpcmbeC1.c1,2004,0419:30:00,29 ,       0,3.869967,0.994187,1.286494
sgpcmbeC1.c1,2004,0420:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0421:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0422:30:00,27 ,       0,1.154918,0.042775,0.222264
sgpcmbeC1.c1,2004,0423:30:00,27 ,       0,0.679387,0.025162,0.130748