Unlikely to be anything to do with units, UV and radiation use the same 
units irrespective of the unit system in use. From the loop/archive data 
last shown I would hazard a guess that the driver is (now) doing its thing 
correctly and presenting weeWX with credible UV and radiation values. If 
these values correspond with what is displayed on the console then I don't 
think there is any issue with the driver. In that case perhaps we need some 
elaboration on 'weewx doesn't read it right'.


On Saturday, 14 April 2018 10:13:24 UTC+10, Andrew Milner wrote:
> Damjan
> I do not think you are telling us everything which you are 
> doing/changing!!  When you first posted to this thread the loop records 
> were in US units, and UV values appeared to be very high.  Your latest 
> posting has loop records in metric, and UV values appear to be more like UV 
> index values.
> So, do you still have a problem?  If you have been changing your database 
> units then your database could well contsin a mixture of imperial and 
> metric values - with very unpredictable results.
> On Saturday, 14 April 2018 02:49:33 UTC+3, Greg Troxel wrote:
>> Andrew Milner <andrew.s...@gmail.com> writes: 
>> > matthew has already said tha weewx does not calculate uv index - it 
>> merely 
>> > uses the data provided by the station 
>> But if there is some hardware that provides bits in a UV field, then a 
>> driver for that hardware should be translating the bits into an index 
>> value according to the encoding used.  I don't think we should be using 
>> calibration notions as a substitute for a well-understood 
>> representation.  But maybe I'm missing something here. 

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