`method latitude : Js_of_ocaml__.Js.number_t Js_of_ocaml__.Js.readonly_prop`
`method longitude : Js_of_ocaml__.Js.number_t Js_of_ocaml__.Js.readonly_prop`
`method altitude : Js_of_ocaml__.Js.number_t Js_of_ocaml__.Js.opt Js_of_ocaml__.Js.readonly_prop`
`method accuracy : Js_of_ocaml__.Js.number_t Js_of_ocaml__.Js.readonly_prop`
`method altitudeAccuracy : Js_of_ocaml__.Js.number_t Js_of_ocaml__.Js.opt Js_of_ocaml__.Js.readonly_prop`
`method heading : Js_of_ocaml__.Js.number_t Js_of_ocaml__.Js.opt Js_of_ocaml__.Js.readonly_prop`
`method speed : Js_of_ocaml__.Js.number_t Js_of_ocaml__.Js.opt Js_of_ocaml__.Js.readonly_prop`