datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,04 0:30:00,27 ,       0,6.871841,0.808334,2.060855
sgpcmbeC1.c1,2007,04 1:30:00,24 ,       0, 6.75554,0.649555,1.884387
sgpcmbeC1.c1,2007,04 2:30:00,26 ,       0,6.971306,0.777516,2.007386
sgpcmbeC1.c1,2007,04 3:30:00,25 ,       0,6.922078,  0.6573,1.855847
sgpcmbeC1.c1,2007,04 4:30:00,27 ,       0,6.909555, 0.49194,1.693684
sgpcmbeC1.c1,2007,04 5:30:00,29 ,       0,6.716824,1.455726,1.995978
sgpcmbeC1.c1,2007,04 6:30:00,30 ,       0,117.9924, 45.7032,32.86538
sgpcmbeC1.c1,2007,04 7:30:00,30 ,1.086107,328.5585,178.2176,96.68034
sgpcmbeC1.c1,2007,04 8:30:00,30 ,16.48691,541.5349,342.1035,157.2114
sgpcmbeC1.c1,2007,04 9:30:00,30 ,6.982819,730.0723,471.6811,218.7879
sgpcmbeC1.c1,2007,0410:30:00,30 , 16.2934,875.5521,590.6294,262.9034
sgpcmbeC1.c1,2007,0411:30:00,30 ,31.57006,965.2032,674.7659,302.6519
sgpcmbeC1.c1,2007,0412:30:00,30 ,17.99099, 998.691,664.7556,324.7541
sgpcmbeC1.c1,2007,0413:30:00,30 ,37.58538,964.7122,644.4953,296.7911
sgpcmbeC1.c1,2007,0414:30:00,30 ,35.86385,869.1464,584.9042,272.4875
sgpcmbeC1.c1,2007,0415:30:00,30 ,19.33579,719.9375,495.2756,231.6255
sgpcmbeC1.c1,2007,0416:30:00,30 ,13.74726,517.3429,350.3537,159.1046
sgpcmbeC1.c1,2007,0417:30:00,30 ,7.164357,303.2724,191.6538,93.78835
sgpcmbeC1.c1,2007,0418:30:00,30 ,2.593215,104.0529,53.23276,28.13026
sgpcmbeC1.c1,2007,0419:30:00,30 ,       0,5.070694,1.118384,1.498345
sgpcmbeC1.c1,2007,0420:30:00,29 ,       0,4.667748, 0.39063,1.235164
sgpcmbeC1.c1,2007,0421:30:00,28 ,       0,5.916539,0.529396,1.556032
sgpcmbeC1.c1,2007,0422:30:00,28 ,       0,6.877647,0.500288,1.708537
sgpcmbeC1.c1,2007,0423:30:00,26 ,       0, 6.66819,0.650243,1.809149