Grow - units for saturation and moisture?

Hi all,

I’m trying to get readings from my Grow hats and send them to Home Assistant for display in pretty graphs. For those of you who don’t use HAss, if you send it any data but don’t specify the units, it assumes it’s a string.

Saturation appears to be a percentage. Moisture just seems to be a number that doesn’t have a range - taking a sensor out of the soil and putting it straight in to water doesn’t make the readings go from 0 to 100, for example.

Can anyone confirm that Saturation is a percentage and what Moisture is actually measuring? Bonus question - if Moisture is, for example, measuring resistance can I convert it to a number that represents something gardening related? Or does anyone know where I can learn what that number represents for my soil quality etc so I can figure the rest out myself?