Table 4. Comparison of root mean square error square error (RMSE) before and after temperature calibration

Date	Calibrated (CAL)			Temperature calibrated (TCAL)			∆ = TCAL – CAL
	Bx	By	Bz	Bx	By	Bz	Bx	By	Bz
Feb 2023	2.82	2.51	2.16	2.80	2.19	2.11	–0.02	–0.32	–0.05
May 2023	3.31	2.68	2.12	3.30	2.66	2.11	–0.01	–0.02	–0.01
Aug 2023	3.24	2.10	2.28	3.15	2.06	2.20	–0.09	–0.04	–0.08