datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,09 0:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,09 1:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,09 2:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,09 3:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,09 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,09 5:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,09 6:30:00,30 ,       0,31.65251,8.598387,9.926508
sgpcmbeC1.c1,2007,09 7:30:00,30 , 0.06643,72.97214,32.00677,23.48076
sgpcmbeC1.c1,2007,09 8:30:00,30 ,0.119653,164.7135, 51.2011,41.57056
sgpcmbeC1.c1,2007,09 9:30:00,29 ,       0,146.8371,52.49175,42.30961
sgpcmbeC1.c1,2007,0910:30:00,30 ,       0,170.9473,49.91298,46.17528
sgpcmbeC1.c1,2007,0911:30:00,30 ,       0,216.6188,80.21456,82.03566
sgpcmbeC1.c1,2007,0912:30:00,30 ,       0, 249.233,85.05155,87.11269
sgpcmbeC1.c1,2007,0913:30:00,30 ,       0,308.1591,104.5055,91.08063
sgpcmbeC1.c1,2007,0914:30:00,30 ,       0,259.4225,89.57533,74.09107
sgpcmbeC1.c1,2007,0915:30:00,30 ,       0,236.9579,67.53175,53.33041
sgpcmbeC1.c1,2007,0916:30:00,30 ,17.24278,153.9093,60.36168,24.28917
sgpcmbeC1.c1,2007,0917:30:00,30 ,       0, 61.7914,36.12445,16.43347
sgpcmbeC1.c1,2007,0918:30:00,29 ,       0,31.72143,7.042636,9.534136
sgpcmbeC1.c1,2007,0919:30:00,29 ,       0,1.409667,0.115703, 0.35489
sgpcmbeC1.c1,2007,0920:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0921:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0922:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0923:30:00,29 ,       0,       0,       0,       0