>>13474839>>13474849>>13474861>>13474883I made some searching:
"The x-axis indicates the player's distance east (positive) or west (negative) of the origin point—i.e., the longitude,
The z-axis indicates the player's distance south (positive) or north (negative) of the origin point—i.e., the latitude,
The y-axis indicates how high or low (from 0 to 255, with 63 being sea level) the player is—i.e., the elevation"