Table 12 Analysis of city administrative level heterogeneity.

Causes variables	Combination of causes for green transformation
	Prefecture-level city				Non-prefecture-level city
	P1	P2	P3	P4	NP1	NP2	NP3	NP4
TI	●	•	●	⊗	•	⊗	⊗	•
ID	⊗	•	⊗	⊗	⊗	•	•	•
MMC	⊗	⊗	⊗	•	⊗	•	•	•
PPI	⊗	⊗	•	•	●	⊗	●	⊗
MCP	•	•	⊗	⊗	⊗	•	•	⊗
IDL	•	⊗	•	•	⊗	⊗	•	⊗
SPC	●	●	•	●	●	•	⊗	⊗
Consistency	0.878	0.881	0.883	0.886	0.879	0.877	0.895	0.914
Raw coverage	0.225	0.197	0.213	0.220	0.223	0.170	0.220	0.218
Unique coverage	0.001	0.012	0.011	0.019	0.047	0.016	0.019	0.018
Solution consistency	0.832				0.777
Solution coverage	0.502				0.637

Notes: ● is the core cause that exists. ⊗ is the core cause missing. • is the edge cause that exists. ⊗ is the edge cause missing.

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