datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,05 0:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,05 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,05 2:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,05 3:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,05 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,05 5:30:00,31 ,       0, 10.6184,3.808865,3.977804
sgpcmbeC1.c1,2006,05 6:30:00,31 ,0.018652,59.34213,32.27196,20.50313
sgpcmbeC1.c1,2006,05 7:30:00,31 ,0.027122, 113.796, 48.9568,  29.666
sgpcmbeC1.c1,2006,05 8:30:00,31 ,0.086685,137.6791,61.92083,39.25367
sgpcmbeC1.c1,2006,05 9:30:00,31 ,       0,248.2178, 77.1378,67.56858
sgpcmbeC1.c1,2006,0510:30:00,31 ,0.202112,199.6527,81.02019,66.58249
sgpcmbeC1.c1,2006,0511:30:00,31 ,0.612417,304.4739,84.17717,88.34425
sgpcmbeC1.c1,2006,0512:30:00,31 , 0.28794,322.1045,109.8273,114.6711
sgpcmbeC1.c1,2006,0513:30:00,31 ,0.924726,333.1305,128.1592, 109.158
sgpcmbeC1.c1,2006,0514:30:00,31 ,0.555734,298.4995,119.7977,102.0357
sgpcmbeC1.c1,2006,0515:30:00,31 ,0.491384,267.3502,116.9412,82.75672
sgpcmbeC1.c1,2006,0516:30:00,31 ,0.080585,206.2615,76.81933,49.48011
sgpcmbeC1.c1,2006,0517:30:00,31 ,       0,104.9263,53.21697,27.73939
sgpcmbeC1.c1,2006,0518:30:00,31 ,       0,48.87069,27.29055,18.32385
sgpcmbeC1.c1,2006,0519:30:00,31 ,       0,10.45899,3.265589,2.876708
sgpcmbeC1.c1,2006,0520:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0521:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0522:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0523:30:00,31 ,       0,       0,       0,       0