I like to just do speed tests as you adjust the antenna when I don’t have a software defined radio and/or oscilloscope to measure the actual signals.
I’ve not seen any good tool that uses the compass or just shows that weak a signal since the noise is so large compared to the signal.
So, no - you’ll need to try them sequentially and also sight things visually or do even more measurements.
Hopefully someone has a better guide to field test, it’s so changeable based on hardware I try to do anything else but use that anymore. It was great when ATT and iPhone original came out, but after a while it’s needing a PHD to decipher.