Thanks for the explanation. It's not a big deal, it just looks 
strange/funny, but your explanation convinces me. 

sobota, 8 listopada 2025 o 10:52:55 UTC+1 [email protected] napisał(a):

> I think this is perfectly fine and no issue. It just seems odd at a first 
> glance, maybe because it's a special case where you have more information 
> about the real value, than in any other possible case: In contrast to e.g. 
> 0.1°C, where you know, it is a value between 0.05 and 0,149999, which is an 
> interval of 0.1°C, with 0.0°C you know it is between 0.0 and 0.049999, with 
> -0.0°C you know it's between -0.049999 and -0.000001, which is an 0.05°C 
> interval each.
>
> Especially for weather observation I'd say the negative sign in front of 
> the rounded zero is crucial, since the impact on the aggregate state of 
> water is essential, which furthermore has observable effects on weather 
> conditions. (Yes, I know about the limitations of this claim in real life)
> Tomasz Lewicki schrieb am Samstag, 8. November 2025 um 10:26:26 UTC+1:
>
>> I first asked the developers of the neowx-material skin, which I use to 
>> display data from my station, but I will repeat the question here, as it 
>> seems to be an internal Weewx issue.
>>
>> Sometimes I see a reading like the one in the screenshot below 
>> (non-graphic version: -0.0*C - minus zero point zero degree of Celsius). Of 
>> course, I guess this is due to the rounding of a value that is not visible. 
>> The question is, does this happen at the Weewx level (in which case I will 
>> ask on the weewx-user group), or can it be "fixed" in neowx-material?
>>
>> Since images cannot be attached to posts on the group, here is a link to 
>> a screenshot: https://imgur.com/a/r7KxBqN
>>
>> The answer was: "It is read by getVar, it looks for example like this 
>> $getVar(current.outTemp) or another variables like that. So I believe it is 
>> caused by weewx. And I agree that it is done by rounding some value, maybe 
>> it is like -0,01 or like that. In neowx-material it is done similar way as 
>> in for example official Seasons/current.inc" (
>> https://github.com/seehase/neowx-material/issues/198#issuecomment-3504803216
>> )
>>
>> And what do you think about that?
>
>

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