Humidor with tray question

[Big Slim Junior]

I bought a new 50 stick humi a little over a month ago and I'm not sure what to think about the humidity in it. It has a tray insert and and there's an analog hygro attached to the top of the box See Picture. There are two square credos on each side of the analog hygro and I'm using PG in them. Anyway, I have a digital hygro in the bottom space that reads 70%, but the analog on top reads at 80%. I just recalibrated both hygros so I know they're close. Any thoughts? TIA.

 

[Matt R]

It may indeed be 80% at the hygrometer, if it's right next to the credos. The cedar behind the hygrometer could be moist too, providing a higher reading.