datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2001,03 0:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,03 1:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,03 2:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,03 3:30:00,23 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,03 4:30:00,21 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,03 5:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,03 6:30:00,31 ,       0,7.604505,1.125881,2.300236
sgpcmbeC1.c1,2001,03 7:30:00,31 ,0.051323,61.71241,17.87839,20.09682
sgpcmbeC1.c1,2001,03 8:30:00,31 ,0.080284,125.1935,29.22391,31.28872
sgpcmbeC1.c1,2001,03 9:30:00,31 , 0.05725,148.8264,35.93842,40.78969
sgpcmbeC1.c1,2001,0310:30:00,31 ,0.432304,233.1607,46.09237,56.20325
sgpcmbeC1.c1,2001,0311:30:00,31 ,0.396413,284.8585,50.71957,63.93137
sgpcmbeC1.c1,2001,0312:30:00,31 ,0.514079,264.9443,67.68277,76.24523
sgpcmbeC1.c1,2001,0313:30:00,31 ,0.406302, 229.317,66.60185,78.22812
sgpcmbeC1.c1,2001,0314:30:00,31 ,       0,232.6243,72.07295,78.87399
sgpcmbeC1.c1,2001,0315:30:00,31 ,       0,197.3642,51.88799,50.32862
sgpcmbeC1.c1,2001,0316:30:00,31 ,       0,149.4553, 46.1159,41.04895
sgpcmbeC1.c1,2001,0317:30:00,31 ,       0, 80.9067,29.54273,27.88204
sgpcmbeC1.c1,2001,0318:30:00,31 ,       0,26.53977,4.262932,6.464421
sgpcmbeC1.c1,2001,0319:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0320:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0321:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0322:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0323:30:00,27 ,       0,       0,       0,       0