Editing SimTX API v24/Packets/CoverageMapResponse (section)

== Raster layout ==
The raster covers the whole globe. Values are stored row-major (<code>index = row × width + column</code>). Row 0 is the northernmost; columns run west to east starting at 180° W. Each value is taken at the centre of its cell:

<syntaxhighlight lang="text">
latitude  =   90 − (row    + 0.5) × 180 / height
longitude = −180 + (column + 0.5) × 360 / width
</syntaxhighlight>

Each value is the power that a standard receiving antenna (an end-fed half-wave wire at ground level) would see from the requested transmitter, at the simulation's current time, ionospheric state included. Points with no usable path are reported as −200 dBm. Every value is finite.