investigation with time zone-related issues and move on only once you've
ruled this out as a cause of the inaccuracy.
+Unit conversions
+----------------
+
+Desired units may be specified in the configuration file.
+
+For MesoWest, the desired unit will be passed along in the API request
+and the conversion will take place through the MesoWest/Synoptic API.
+
+For NRCS, this program will do the conversion manually, as NRCS does not
+permit specifying the desired unit.
+
A note on supported measurements
--------------------------------
Version history
---------------
+- 3.1.1 (Feb 2021)
+
+ Fix relative humidity rounding.
+
- 3.1.0 (Jan 2021)
Implement time zone support.