GC are certainly not explicitly part of the calibration treatment and enter only implicitly given that the positions of the stars are Utilized in the calculation in the orbital actions. Yet, the systematic traits from the abundances with which can be very easily obvious from the APOGEE DR16 abundances substantially https://billionaire-brain-wave-re63737.isblog.net/the-best-side-of-the-stellar-abundance-review-49933165