About the Signal Quality given by mmcli

[Nizar BEN NEJI]

I'm using mmcli with Huawei (E3372H) modem and I would like to evaluate the
signal quality. The only value I can get with mmcli -m 3 is:
...
access tech: 'umts'
signal quality: '32' (recent)
...

What does 32 means? How can I deduce if it is weak, fair, good or excellent?
I am a little bit confused, is this value ASU (Arbitrary Strength Unit)
or RSR, RSRQ, RSSI or SNR?

Thank you in advance
Nizar
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