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Autocalibration ADF4372

Hello Kudret

I read the value of 89 MHz when autocalibration is on and the ADF4372 returns me these values:  Core: C; Subband: 11; Bias:11 at  temp: 63.5degree centigrade

after this, I turn off autocalibration and set this value and I can lock the ADF4372.

after this step, I turn on autocalibration and read the values again at 89 MHz and ADF4372 returns me these values: Core: B; Subband: 205; Bias:0 at  temp: 61.5degree centigrade

after this, I turn off autocalibration and set this value and I can lock the ADF4372.

I did this test three times and ADF4372 returns me three different values, and ADF4372 can lock for all these three values.

1. Is it correct that it returns me three different values for Core, Subband, and Bias?

2. why ADF4372 can lock for a frequency (for example here is 89MHz) with three different values?

3. Can I trust all these values when I want to use this IC at -40°C to +105°C?

Thank you