datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,04 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,04 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,04 2:30:00,30 ,       0,1.489792, 0.04966,0.271998
sgpcmbeC1.c1,1998,04 3:30:00,30 ,       0,1.804855,0.060162, 0.32952
sgpcmbeC1.c1,1998,04 4:30:00,30 ,       0, 0.39525,0.013175,0.072162
sgpcmbeC1.c1,1998,04 5:30:00,30 ,       0,6.916594,1.266571,1.820449
sgpcmbeC1.c1,1998,04 6:30:00,30 ,4.387048,52.28371,32.90495,15.17298
sgpcmbeC1.c1,1998,04 7:30:00,30 ,6.637124,103.2942,50.70473,22.45826
sgpcmbeC1.c1,1998,04 8:30:00,30 ,15.77308,155.6292,67.35747,35.87118
sgpcmbeC1.c1,1998,04 9:30:00,30 ,16.03592,183.2457,61.35362,36.46037
sgpcmbeC1.c1,1998,0410:30:00,30 ,8.871758,275.5576,74.66315,67.11288
sgpcmbeC1.c1,1998,0411:30:00,30 ,7.838599,241.0358,77.83248, 74.7807
sgpcmbeC1.c1,1998,0412:30:00,30 ,3.124274,336.7852,90.22914, 108.659
sgpcmbeC1.c1,1998,0413:30:00,30 ,11.81802,320.9886,94.05295,92.70594
sgpcmbeC1.c1,1998,0414:30:00,30 , 23.7431,310.8355,98.98273,89.56106
sgpcmbeC1.c1,1998,0415:30:00,30 ,16.77731,222.7623,78.61023,50.93545
sgpcmbeC1.c1,1998,0416:30:00,30 ,15.75343,182.3883,72.77515,40.65249
sgpcmbeC1.c1,1998,0417:30:00,30 , 7.02758,118.6637,61.63878, 29.1951
sgpcmbeC1.c1,1998,0418:30:00,30 ,2.522131,52.97893,31.22271,16.62022
sgpcmbeC1.c1,1998,0419:30:00,30 ,       0,6.935396,1.784547,1.606874
sgpcmbeC1.c1,1998,0420:30:00,30 ,       0,1.302403,0.043413,0.237785
sgpcmbeC1.c1,1998,0421:30:00,30 ,       0,0.639247,0.034363,0.134752
sgpcmbeC1.c1,1998,0422:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,0423:30:00,30 ,       0,1.715939,0.078151,0.329909