datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,09 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,09 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,09 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,09 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,09 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,09 5:30:00,29 ,       0,0.006704,0.000231,0.001245
sgpcmbeC1.c1,2003,09 6:30:00,30 ,0.028706,15.82162,6.209619,4.521531
sgpcmbeC1.c1,2003,09 7:30:00,30 ,1.298615,52.21975,29.49533,17.87059
sgpcmbeC1.c1,2003,09 8:30:00,30 ,4.772569,90.83077,53.89496,32.32325
sgpcmbeC1.c1,2003,09 9:30:00,30 ,4.741799, 121.455,78.21347,42.36537
sgpcmbeC1.c1,2003,0910:30:00,30 ,8.398477, 140.465,93.57608,44.95057
sgpcmbeC1.c1,2003,0911:30:00,30 ,9.577048,149.8242,104.7056,48.24491
sgpcmbeC1.c1,2003,0912:30:00,30 ,4.303276,150.5415,107.2534,45.93678
sgpcmbeC1.c1,2003,0913:30:00,30 ,8.634851,143.2776,107.3401,40.28142
sgpcmbeC1.c1,2003,0914:30:00,30 ,6.431373,128.1188, 94.0053,35.73813
sgpcmbeC1.c1,2003,0915:30:00,30 ,5.621033,104.7416,72.57786,31.84691
sgpcmbeC1.c1,2003,0916:30:00,30 ,1.525558, 81.1952,50.67731,25.66506
sgpcmbeC1.c1,2003,0917:30:00,30 ,0.640258, 46.9146,26.72071,12.92176
sgpcmbeC1.c1,2003,0918:30:00,30 ,       0,13.94205,4.707375,4.448383
sgpcmbeC1.c1,2003,0919:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0920:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0921:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0922:30:00,30 ,       0,0.022904,0.000763,0.004182
sgpcmbeC1.c1,2003,0923:30:00,30 ,       0,       0,       0,       0