PROJCS["Custom",
    GEOGCS["GCS_Sphere",
        DATUM["Not_specified_based_on_Authalic_Sphere",
            SPHEROID["Sphere",6371000,0]],
        PRIMEM["Greenwich",0],
        UNIT["Degree",0.0174532925199433]],
    PROJECTION["Mercator_1SP"],
    PARAMETER["False_Easting",0],
    PARAMETER["False_Northing",0],
    PARAMETER["Central_Meridian",0],
    PARAMETER["latitude_of_origin",0],
    UNIT["Meter",1]]