VERT_CS["RGM_2004",
    VERT_DATUM["D_Reseau_Geodesique_de_Mayotte_2004",2002,
        AUTHORITY["ESRI","from_geogdatum_ESRI_106998"]],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    AXIS["Ellipsoidal height",UP],
    AUTHORITY["ESRI","115780"]]