Sub-index	Index measurement standard
Sub-index	1	2	3	4	5
TC	The highest frequency	High frequency	Normal frequency	Low frequency	Lowest frequency
OLI	Very low	Lower	Normal	Higher	Very high
AD	Free registration	Lax audit	Routine audit	Strict audit	Invite admission
UDS	Very easy	Easy	Normal	Difficult	Very difficult
FVE	Very low	Lower	Normal	Higher	Very high
IIT	Very low	Lower	Normal	Higher	Very high
OCP	Very low	Lower	Normal	Higher	Very high
NCRI	Very slow	Slow	Normal	Fast	Very fast
NCDL	A long time	Relatively long time	Normal	Relatively short time	A short time
STAL	Little attention	Less attention	Normal	More attention	Huge attention
IRS	Very low	Lower	Normal	Higher	Very high
VVD	Very slow	Slow	Normal	Fast	Very fast