Region	2016			2017			2018
Region	ρ¹	α₁	β₁	ρ²	α₂	β₂	ρ³	α₃	β₃
Xianyang				0.427	0.002	0.261	0.687	0.016 (−)	0.016 (−)
Tongchuan	0.932	0.062 (−)	0.110 (−)	0.791	0.070 (−)	0	0.330	0	3.492
Weinan	0.513	0.255	5.582				0.741	0	8.551
Yang Ling				0.413	0.010 (−)	0	0.296	0.180	0.106
Region	2019			2020
Region	ρ⁴	α₄	β₄	ρ⁵	α₅	β₅
Xianyang	0.668	0.009 (−)	0	0.579	0.377 (−)	0.055 (−)
Tongchuan	0.825	0.121 (−)	0	0.458	0.537 (−)	0
Weinan
Yang Ling	0.261	0.111 (−)	0.162 (−)	0.213	0.073 (−)	0