AirGradient Forum

Map values different from graph values

This is the case for most readings on the map. Current value matches the the dashboard values but the graph does not

I noticed the same problem with my unit (and others)

Noticing this issues well, tried restarting but makes no difference. Current value on the map and graph is different, and different again for the dashboard as well. Dashboard here shows value in the red but map does not show record such value.

The PM2.5 values can be raw or corrected. The raw values are often around 50% higher than corrected. Maybe that’s the reason for the observed difference.

Both the dashboard and the map can show raw and corrected PM2.5 based on the settings.

Map:
drop-down menu top right

Dashboard:
sensor-specific “Advanced settings” (3 vertical points on the right end of the table with real-time data)

We know that. But switching to the uncorrected value on the map results in yet another set of values

Yes I do know that, both are also showing corrected value. In any case the dashboard, whether it’s raw or corrected value, reflect the value on the graph accurately, as in for that hour if it’s around 35 units, it would show the bar peaking around 35 for that period of time. But on the map itself, the bar on the graph would be consistently lower than the current value (when there’s no fluctuation in the value), and does not tally with the dashboard. Even if I switch the map to raw it would still not tally. This issue only started on 3 days ago for me.

Let me show u in this screenshot. Dashboard is set to both raw and corrected value, map show both raw and corrected value graph. All are 24 hours timeframe with 5 minutes interval. Dashboard EPA correction show a 24-hour average around 12.8 with bar peaking close to 30 while Map shows 5.9 with bar peaking close to 10. For raw value, dashboard show 24-hour average of 22.2 with bar peaking close to 35, while map show 24-hour average of 12.7 with bar peaking close to 20.

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