{
    "type": "FeatureCollection",
    "features": [{
        "type": "Feature",
        "properties": {
            "cell": "top-left"
        },
        "geometry": {
            "type": "Point",
            "coordinates": [ -70, 60 ]
        }
    }, {
        "type": "Feature",
        "properties": {
            "cell": "top-middle"
        },
        "geometry": {
            "type": "Point",
            "coordinates": [ 0, 60 ]
        }
    }, {
        "type": "Feature",
        "properties": {
            "cell": "top-right"
        },
        "geometry": {
            "type": "Point",
            "coordinates": [ 70, 60 ]
        }
    }, {
        "type": "Feature",
        "properties": {
            "cell": "middle-left"
        },
        "geometry": {
            "type": "Point",
            "coordinates": [ -70, 0 ]
        }
    }, {
        "type": "Feature",
        "properties": {
            "cell": "middle-middle"
        },
        "geometry": {
            "type": "Point",
            "coordinates": [ 0, 0 ]
        }
    }, {
        "type": "Feature",
        "properties": {
            "cell": "middle-right"
        },
        "geometry": {
            "type": "Point",
            "coordinates": [ 70, 0 ]
        }
    }, {
        "type": "Feature",
        "properties": {
            "cell": "bottom-left"
        },
        "geometry": {
            "type": "Point",
            "coordinates": [ -70, -60 ]
        }
    }, {
        "type": "Feature",
        "properties": {
            "cell": "bottom-middle"
        },
        "geometry": {
            "type": "Point",
            "coordinates": [ 0, -60 ]
        }
    }, {
        "type": "Feature",
        "properties": {
            "cell": "bottom-right"
        },
        "geometry": {
            "type": "Point",
            "coordinates": [ 70, -60 ]
        }
    }]
}