gv
    18.41277   -73.68679
    18.35981   -73.34115
    19.00000   -74.00000
    19.33000   -74.75000
    19.57341   -75.90710
    19.68389   -76.63523
    19.68478   -76.58966
    19.68389   -76.63523
    19.74650   -76.98340
    19.62280   -77.67260
    19.49650   -78.36070
    19.38150   -79.01100
    19.26420   -79.66040
    19.15970   -80.20950
    19.05360   -80.75790
    18.95980   -81.25630
    18.86470   -81.75410
    18.33320   -81.68930
    17.80160   -81.62480
    17.95000   -80.30000
    18.33000   -77.40000
    18.30000   -76.60000
    18.41277   -73.68679