BBBike
WGS84地理坐标，如下：
6ring-coords: [116.072, 39.714], [116.075, 39.705], [116.078, 39.695], [116.099, 39.688], [116.122, 39.688], [116.167, 39.685], [116.202, 39.684], [116.275, 39.682], [116.37, 39.701], [116.415, 39.711], [116.459, 39.715], [116.516, 39.729], [116.543, 39.734], [116.604, 39.749], [116.627, 39.769], [116.648, 39.788], [116.665, 39.806], [116.673, 39.815], [116.685, 39.824], [116.691, 39.832], [116.697, 39.841], [116.707, 39.864], [116.712, 39.874], [116.715, 39.884], [116.718, 39.904], [116.718, 39.922], [116.714, 39.938], [116.715, 39.952], [116.716, 39.965], [116.709, 39.993], [116.7, 40.005], [116.69, 40.016], [116.661, 40.057], [116.656, 40.064], [116.652, 40.069], [116.643, 40.078], [116.64, 40.082], [116.637, 40.086], [116.633, 40.091], [116.63, 40.103], [116.629, 40.107], [116.627, 40.112], [116.624, 40.121], [116.623, 40.132], [116.617, 40.142], [116.613, 40.145], [116.608, 40.146], [116.601, 40.147], [116.584, 40.149], [116.542, 40.152], [116.501, 40.161], [116.468, 40.164], [116.399, 40.164], [116.344, 40.178], [116.279, 40.181], [116.173, 40.175], [116.15, 40.161], [116.138, 40.126], [116.129, 40.086], [116.11, 40.066], [116.08, 40.029], [116.071, 39.98], [116.099, 39.94], [116.122, 39.909], [116.122, 39.885], [116.11, 39.859], [116.096, 39.814], [116.091, 39.797], [116.084, 39.787], [116.077, 39.75], [116.073, 39.734]