discrepancies between min/max on archive vs <measurement>_archive tables

[Constantine Samaklis]

Hi,

I have been going through my data and have noticed some discrepancies in extreme (min/max) values between the archive table and the <measurement>_archive tables

For example:

select min(`windchill`) from archive; 

gives me a value of -15.84

but when doing the same query on archive_day_windchill

select min(`min`) from archive_day_windchill;

gives me a value of -19.10

I am using a Vantage pro weather station.

I am not sure if the archive table records the value at the preset interval where the archive_day_windchill records the min/max values independently on the interval, based on what the weather station pushes out. (The vantage pro fires multiple times per min where my interval is set to 10 min)

Any insight would be very helpful.

Thanks

[Andrew Milner]

Archive records the average value for the archive period.

Daily tables record archive value OR loop value for max and min - depending on the setting in weewx.conf for loop_hilo (I think that is the correct name)

Does that help??

[Constantine Samaklis]

Yes, makes sense. Thanks Andrew.

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