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 ,       0,6.332543,1.592396,2.051151
sgpcmbeC1.c1,2003,04 6:30:00,30 ,4.369517,32.95157,17.37295,7.658556
sgpcmbeC1.c1,2003,04 7:30:00,30 ,4.811424,73.92121,20.77842,17.04298
sgpcmbeC1.c1,2003,04 8:30:00,30 ,2.094763,63.39131,22.11887,19.90477
sgpcmbeC1.c1,2003,04 9:30:00,30 ,1.142071,98.11329,28.90261,28.86369
sgpcmbeC1.c1,2003,0410:30:00,30 ,0.687934,130.6528,43.74158,46.58814
sgpcmbeC1.c1,2003,0411:30:00,30 ,0.580383,163.2676,41.75849,44.30173
sgpcmbeC1.c1,2003,0412:30:00,30 ,0.667237,139.7514,42.40237, 43.1352
sgpcmbeC1.c1,2003,0413:30:00,30 ,   0.659, 137.502,38.31313,41.83566
sgpcmbeC1.c1,2003,0414:30:00,30 ,0.890557,118.8058,33.66776, 36.5878
sgpcmbeC1.c1,2003,0415:30:00,30 ,1.081743,108.4288,34.29766,30.15954
sgpcmbeC1.c1,2003,0416:30:00,30 ,2.324102,81.54622,20.38349, 19.6415
sgpcmbeC1.c1,2003,0417:30:00,30 ,5.269317,66.11693,20.52307,16.37955
sgpcmbeC1.c1,2003,0418:30:00,30 ,7.009795,27.84496,18.01158,5.158229
sgpcmbeC1.c1,2003,0419:30:00,30 ,       0,5.656223, 1.30905,1.523937
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