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 ,       0,5.224742,0.644768,1.298354
sgpcmbeC1.c1,2002,04 6:30:00,30 ,       0,85.11404,25.94382,19.06462
sgpcmbeC1.c1,2002,04 7:30:00,30 ,10.78129,204.6562,78.64748,39.76901
sgpcmbeC1.c1,2002,04 8:30:00,30 ,16.28913,325.9592,126.3061,67.66179
sgpcmbeC1.c1,2002,04 9:30:00,30 ,19.29945,420.8758, 164.108,94.62675
sgpcmbeC1.c1,2002,0410:30:00,30 , 25.4898,425.3999,197.2169,114.4279
sgpcmbeC1.c1,2002,0411:30:00,30 ,84.57687, 567.322,235.2031,139.7885
sgpcmbeC1.c1,2002,0412:30:00,30 ,79.41268,526.6201,235.2591,148.2086
sgpcmbeC1.c1,2002,0413:30:00,30 ,81.66717,543.8734,231.7215,134.6015
sgpcmbeC1.c1,2002,0414:30:00,30 ,30.47176,462.8301,203.2879,115.5337
sgpcmbeC1.c1,2002,0415:30:00,30 ,71.51253,368.9464,178.2684, 92.5418
sgpcmbeC1.c1,2002,0416:30:00,30 ,29.17877,272.5588,135.0607,65.06089
sgpcmbeC1.c1,2002,0417:30:00,30 , 12.0146, 177.512,87.58784,39.54667
sgpcmbeC1.c1,2002,0418:30:00,30 ,0.412515,76.53149,35.56487,19.12884
sgpcmbeC1.c1,2002,0419:30:00,30 ,       0,3.567574,0.741764,1.064264
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