datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,06 0:30:00,29 ,       0,0.388377,0.013392, 0.07212
sgpcmbeC1.c1,2002,06 1:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,06 2:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,06 3:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,06 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,06 5:30:00,29 ,       0,9.341335,6.416032,2.596535
sgpcmbeC1.c1,2002,06 6:30:00,29 ,1.110866,18.04693,11.89233,4.222193
sgpcmbeC1.c1,2002,06 7:30:00,29 ,   0.456, 21.1936,11.50433,4.481353
sgpcmbeC1.c1,2002,06 8:30:00,29 ,0.959809,56.74166,16.34344,  12.923
sgpcmbeC1.c1,2002,06 9:30:00,29 ,0.368876,50.06377,17.43399,14.54216
sgpcmbeC1.c1,2002,0610:30:00,29 ,2.613558,59.67642,21.45721,20.13918
sgpcmbeC1.c1,2002,0611:30:00,29 ,1.409778,62.85288,21.65438,19.94022
sgpcmbeC1.c1,2002,0612:30:00,29 ,0.561197,81.39045,29.85095,25.85966
sgpcmbeC1.c1,2002,0613:30:00,29 ,0.817624,71.01008,28.40135,24.30509
sgpcmbeC1.c1,2002,0614:30:00,29 ,0.478645,61.18406,27.73493,21.89588
sgpcmbeC1.c1,2002,0615:30:00,29 ,0.640977,51.01308,22.99502,16.55971
sgpcmbeC1.c1,2002,0616:30:00,29 ,0.086791,55.31548, 19.1527,14.31545
sgpcmbeC1.c1,2002,0617:30:00,29 ,0.990256, 34.7315,15.40946,9.400885
sgpcmbeC1.c1,2002,0618:30:00,29 ,       0,22.06866,12.37086,5.448358
sgpcmbeC1.c1,2002,0619:30:00,29 ,       0,10.35516, 6.14217,2.999192
sgpcmbeC1.c1,2002,0620:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0621:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0622:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0623:30:00,29 ,       0,0.227729,0.007853,0.042288