datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,07 0:30:00,30 ,       0,0.182942,0.006098,  0.0334
sgpcmbeC1.c1,2004,07 1:30:00,30 ,       0,0.759913,0.030821,0.139631
sgpcmbeC1.c1,2004,07 2:30:00,30 ,       0,0.921558,0.048674,0.191936
sgpcmbeC1.c1,2004,07 3:30:00,30 ,       0,0.437728,0.014591,0.079918
sgpcmbeC1.c1,2004,07 4:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2004,07 5:30:00,30 , 0.71858,20.82978,9.484785,5.146986
sgpcmbeC1.c1,2004,07 6:30:00,30 ,11.23999,109.1656, 62.0788,24.74496
sgpcmbeC1.c1,2004,07 7:30:00,30 ,18.01793,225.0672,111.4916,48.96474
sgpcmbeC1.c1,2004,07 8:30:00,30 ,60.47281,290.5274,159.8723, 66.4409
sgpcmbeC1.c1,2004,07 9:30:00,30 ,15.39723,400.7636,210.2745,111.6967
sgpcmbeC1.c1,2004,0710:30:00,30 ,49.26009,466.0384,219.1109,111.3723
sgpcmbeC1.c1,2004,0711:30:00,31 ,109.1398, 502.703,248.0641,118.9738
sgpcmbeC1.c1,2004,0712:30:00,31 ,86.81523,553.4496,249.0472,126.2121
sgpcmbeC1.c1,2004,0713:30:00,31 , 93.4204,505.3218,240.3716,105.0194
sgpcmbeC1.c1,2004,0714:30:00,31 ,14.91101,433.8175,206.6936,83.98819
sgpcmbeC1.c1,2004,0715:30:00,31 ,15.33461,346.7484, 192.231,74.93795
sgpcmbeC1.c1,2004,0716:30:00,31 ,60.45695,302.7138,157.0271,52.72494
sgpcmbeC1.c1,2004,0717:30:00,31 ,31.43954,215.8503,115.5766,41.98234
sgpcmbeC1.c1,2004,0718:30:00,31 ,12.88791,127.1096,68.85798,24.84958
sgpcmbeC1.c1,2004,0719:30:00,31 , 0.78027,33.63553,19.28325,7.335049
sgpcmbeC1.c1,2004,0720:30:00,31 ,       0,0.384478,0.028582,0.091164
sgpcmbeC1.c1,2004,0721:30:00,31 ,       0,0.037993,0.001226,0.006824
sgpcmbeC1.c1,2004,0722:30:00,31 ,       0,0.351303,0.011332,0.063096
sgpcmbeC1.c1,2004,0723:30:00,31 ,       0,0.194712,0.006281,0.034971