The 3d images from LRO orbital photography are being used to make an exact digital topographic map of the moon, and this is fact may tweak the mean elevation value.

LRO轨道摄影机拍摄的3d图像被用作制作月球精确数字地形图，而这可能会调整平均高度值。

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This premium navigator also includes lifetime map updates2, Garmin's most advanced traffic service, HD Digital Traffic, 3D buildings and terrain and voice command.

ENGADGET: Garmin's 2013 n��vi sat nav lineup detailed on company's website (update: hands-on photos)