datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,05 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,05 1:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,05 2:30:00,28 ,       0, 0.65672,0.023454,0.124108
sgpcmbeC1.c1,2004,05 3:30:00,28 ,       0,0.607587,  0.0217,0.114823
sgpcmbeC1.c1,2004,05 4:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,05 5:30:00,31 ,       0,13.28786,1.859438,3.365272
sgpcmbeC1.c1,2004,05 6:30:00,31 ,       0, 133.657,36.29813,44.19303
sgpcmbeC1.c1,2004,05 7:30:00,25 ,       0,326.4999,120.1526,116.1736
sgpcmbeC1.c1,2004,05 8:30:00,27 ,0.058887,519.6349,189.3113,190.0782
sgpcmbeC1.c1,2004,05 9:30:00,25 , 0.13411,687.9797,263.6549,284.1737
sgpcmbeC1.c1,2004,0510:30:00,25 ,0.767075,819.3091, 349.478,312.0217
sgpcmbeC1.c1,2004,0511:30:00,25 ,0.100678,892.6276,493.1521, 292.563
sgpcmbeC1.c1,2004,0512:30:00,26 ,0.001732, 916.608, 526.534,306.1932
sgpcmbeC1.c1,2004,0513:30:00,27 ,       0,899.7664,538.8316,299.2523
sgpcmbeC1.c1,2004,0514:30:00,27 ,       0,798.4525,467.2073, 277.822
sgpcmbeC1.c1,2004,0515:30:00,25 ,       0,668.9303, 381.228,231.6251
sgpcmbeC1.c1,2004,0516:30:00,27 ,0.008186,494.6929,254.8323, 177.738
sgpcmbeC1.c1,2004,0517:30:00,25 ,0.002005,294.5698,166.4875,90.06098
sgpcmbeC1.c1,2004,0518:30:00,31 ,       0,122.2201,   44.28,36.66125
sgpcmbeC1.c1,2004,0519:30:00,31 ,       0,10.08782,1.656647,2.608938
sgpcmbeC1.c1,2004,0520:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,0521:30:00,31 ,       0,0.306284, 0.00988, 0.05501
sgpcmbeC1.c1,2004,0522:30:00,30 ,       0,0.446117, 0.01825,0.082902
sgpcmbeC1.c1,2004,0523:30:00,31 ,       0,0.257563,0.008308, 0.04626