Model changes:
--------------
..
2017, 057: BSW52 -> BSW53, I08 -> C14, IGS14
2017, 168: RINEX2 -> RINEX3
2018, 086: Ambiguity resolution strategy improved
2019, 077: FS solution: 8h -> 4h observation data
Relative sigma for tropo: 1mm -> 2mm
2019, 266: CODE ultra-rapid switched from GR to GRE
ESA PCO/PCV values for Galileo satellites
2019, 323: Type mean calibration values incl. Galileo (instead of individual)
for NRT troposphere and coordinate values. Daily solution still
based on individual calibrations (C14, for MULTI_A and EPN rapid).
2020, 139: Reference frame change IGS14 -> IGB14
2020, 329: Updated BSW version (and switch from redhat6 to redhat8)
2021, 007: Improved multi-GNSS ambiguity resolution (WL/NL, code screening by system for MW)
2021, 161: Thermal radiation option activated for Galileo ORBGEN fit at PNAC
2022, 293: Improved QIF ambiguity resolution activated for Galileo
2022, 332: Reference frame change IGB14 -> IGS20, PCV_LPT.R20 -> ANT_I20I20, SATELLIT_I20
EUREF contributions changed from V_P -> V_F (C14 -> I20)
0D_ solution used for MULTI_A still based on C14 (PCV_LPT.C14 -> ANT_C14I20)
Meanpole model: IERS2010 -> IERS2010_v1.2.0
Subdaily ERP model: IERS2010XY -> DESAI2016
2024, 138: TRP_ASIG=5.000 introduced for ADDNEQ2 reduction steps
2025, 023: BSW53 -> BSW55, RNXSMT with V_USE only
GLONASS ambiguity resolution for different frequencies only for same receiver models
