datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,03 0:30:00,27 ,       0,0.089703,0.004488,0.017553
sgpcmbeC1.c1,2002,03 1:30:00,27 ,       0,0.015855,0.000866,0.003327
sgpcmbeC1.c1,2002,03 2:30:00,27 ,       0,0.107112,0.006476,0.022088
sgpcmbeC1.c1,2002,03 3:30:00,27 ,       0,0.223285,0.013672,0.046254
sgpcmbeC1.c1,2002,03 4:30:00,27 ,       0,0.019732,0.000731,0.003797
sgpcmbeC1.c1,2002,03 5:30:00,27 ,       0,0.070847,0.002624,0.013634
sgpcmbeC1.c1,2002,03 6:30:00,27 ,       0,8.031102,2.032778,2.417032
sgpcmbeC1.c1,2002,03 7:30:00,27 ,0.846374,25.83995,10.96132,6.813285
sgpcmbeC1.c1,2002,03 8:30:00,26 ,1.617602,28.27559,11.25996,5.953493
sgpcmbeC1.c1,2002,03 9:30:00,27 ,1.205947,50.42691,12.30564,9.762742
sgpcmbeC1.c1,2002,0310:30:00,28 ,2.678815,30.68173, 11.2426,8.384839
sgpcmbeC1.c1,2002,0311:30:00,28 ,0.456831,42.15903,9.768744,10.15249
sgpcmbeC1.c1,2002,0312:30:00,27 ,0.457681,28.56021,8.802999,9.178602
sgpcmbeC1.c1,2002,0313:30:00,26 ,1.815304,33.58824,8.099217, 7.78805
sgpcmbeC1.c1,2002,0314:30:00,26 ,1.131182,34.81864,11.07384,9.017581
sgpcmbeC1.c1,2002,0315:30:00,27 ,1.773051,54.68303,15.85751,12.26656
sgpcmbeC1.c1,2002,0316:30:00,27 ,1.963985,29.64915,13.22104,7.696849
sgpcmbeC1.c1,2002,0317:30:00,27 ,0.792177,26.67171,11.21101,6.283642
sgpcmbeC1.c1,2002,0318:30:00,27 ,       0,8.760401,4.771884,2.690878
sgpcmbeC1.c1,2002,0319:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0320:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0321:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0322:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0323:30:00,27 ,       0,0.113994,0.013086,0.032448