datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,04 0:30:00,30 ,       0,0.595958,0.065829,0.134075
sgpcmbeC1.c1,2005,04 1:30:00,30 ,       0,0.370798,0.043043,0.089634
sgpcmbeC1.c1,2005,04 2:30:00,30 ,       0,0.147782,0.018122,0.036176
sgpcmbeC1.c1,2005,04 3:30:00,30 ,       0,0.123509, 0.01265,0.033901
sgpcmbeC1.c1,2005,04 4:30:00,30 ,       0,0.144349,0.006986,0.027187
sgpcmbeC1.c1,2005,04 5:30:00,30 ,       0,1.633552,0.155313, 0.36201
sgpcmbeC1.c1,2005,04 6:30:00,30 ,       0,83.15001,26.63659,26.90059
sgpcmbeC1.c1,2005,04 7:30:00,30 ,0.058521, 268.452,119.7682, 97.6806
sgpcmbeC1.c1,2005,04 8:30:00,30 ,0.030907,474.9174,239.0407,162.8069
sgpcmbeC1.c1,2005,04 9:30:00,30 ,0.637497,652.3326,347.8414, 252.278
sgpcmbeC1.c1,2005,0410:30:00,30 ,0.295509, 794.817,442.0819,300.4434
sgpcmbeC1.c1,2005,0411:30:00,30 ,0.578491,894.4756,508.7473,322.5452
sgpcmbeC1.c1,2005,0412:30:00,30 ,0.101738,925.3151,506.6492,319.4444
sgpcmbeC1.c1,2005,0413:30:00,30 ,0.164299,888.6376,471.9598,323.8801
sgpcmbeC1.c1,2005,0414:30:00,30 ,0.011688, 791.988, 439.787,300.0141
sgpcmbeC1.c1,2005,0415:30:00,30 ,0.056503,647.4269,321.3991,243.6848
sgpcmbeC1.c1,2005,0416:30:00,30 ,0.197205, 464.852,241.2652,153.4847
sgpcmbeC1.c1,2005,0417:30:00,30 ,       0,260.2386,112.9445,88.87575
sgpcmbeC1.c1,2005,0418:30:00,30 ,       0,75.39895,20.45554,20.71603
sgpcmbeC1.c1,2005,0419:30:00,30 ,       0,0.972536,0.086781,0.190761
sgpcmbeC1.c1,2005,0420:30:00,30 ,       0,0.205448,0.029464,0.056877
sgpcmbeC1.c1,2005,0421:30:00,30 ,       0,0.384183,0.072974,0.125242
sgpcmbeC1.c1,2005,0422:30:00,30 ,       0,0.411669,0.046516,0.093353
sgpcmbeC1.c1,2005,0423:30:00,30 ,       0,0.319658,0.030852, 0.07472