date     leadtime location  lat   lon   altitude  obs   fcst
20120101 0        3         50    5    12    3     6
20120101 0        1         50    15    12    3     6
20120101 0        2         20    7    12    3     6
20120101 0        11        20    17    12    3     6
20120101 0        21        30    10    12    3     6
20120101 0        911       30    20    12    3     6
