Table 1 Evaluation of model performance metrics.

Quarter		R	MAE	NMSE	RMSE	IOA
(a)
JFM	Prior Posterior	-0.02 0.75	1.04 0.27	7.68 0.20	1.30 0.53	0.34 0.86
AMJ	Prior Posterior	0.31 0.84	1.02 0.32	5.88 0.12	1.22 0.45	0.39 0.90
JAS	Prior Posterior	0.48 0.88	0.74 0.23	2.90 0.11	0.91 0.34	0.44 0.93
OND	Prior Posterior	0.00 0.79	0.88 0.23	6.95 0.12	1.04 0.36	0.67 0.89
Annually	Prior Posterior	0.32 0.73	0.92 0.25	1.00 0.09	4.07 0.35	0.35 0.84
(b)
Annually	Prior Posterior	0.50 0.66	1.17 0.83	1.46 0.24	1.67 0.37	0.54 0.74

(a)Evaluation of model performance metrics against CrIS for \(\:\mathbf{N}{\mathbf{H}}_{3}\) column density (Errors unit is molecules/cm² × 10^− 16).
(b)Performance metrics between a prior and a posterior biweekly averaged \(\:\mathbf{N}{\mathbf{H}}_{3}\) concentrations against AMoN in 2019 (Errors unit: µg/m³).
MAE: mean absolute error, NMSE: normalized mean square error, RMSE: root mean square error, R: correlation coefficients, IOA: index of agreement, JFM: January-February-March, AMJ: April-May-June, JAS: July-August- September, OND: October-November-December.

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