datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,04 0:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,04 1:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,04 2:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,04 3:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,04 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,04 5:30:00,30 ,       0,3.567287,0.793204,1.134188
sgpcmbeC1.c1,2003,04 6:30:00,30 ,4.200706,82.18665,32.52765,17.87824
sgpcmbeC1.c1,2003,04 7:30:00,30 ,28.08341,177.4335,88.45066,37.82887
sgpcmbeC1.c1,2003,04 8:30:00,30 , 57.1256,300.2381,140.2364,67.63923
sgpcmbeC1.c1,2003,04 9:30:00,30 ,74.43529,383.0705,175.9952,90.99119
sgpcmbeC1.c1,2003,0410:30:00,30 ,44.91448,412.9137,195.0328,106.5258
sgpcmbeC1.c1,2003,0411:30:00,30 ,20.39882,  518.16,214.1205,129.3052
sgpcmbeC1.c1,2003,0412:30:00,30 ,47.76202,535.0287,238.2758,143.7133
sgpcmbeC1.c1,2003,0413:30:00,30 ,77.80188,521.5185, 245.639,147.6868
sgpcmbeC1.c1,2003,0414:30:00,30 ,56.22459, 487.164,237.0292,134.9246
sgpcmbeC1.c1,2003,0415:30:00,30 ,66.40801,381.1138,198.8001,104.3926
sgpcmbeC1.c1,2003,0416:30:00,30 ,65.20268,263.3035,144.2694,64.97007
sgpcmbeC1.c1,2003,0417:30:00,30 ,19.07928,177.8477,94.20773,35.07439
sgpcmbeC1.c1,2003,0418:30:00,30 ,8.815458,54.42138,33.09162,11.15491
sgpcmbeC1.c1,2003,0419:30:00,30 ,       0,3.187484,0.589897,0.785463
sgpcmbeC1.c1,2003,0420:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0421:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0422:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0423:30:00,29 ,       0,       0,       0,       0