That PDF you linked doesn't really explain anything; as you mentioned things like "access to justice" isn't really defined well enough, but that link contains the sources it used for these figures.
For justice it used https://v-dem.net/ – I didn't really look beyond this and in to the methodology of V-Dem.
Re: life expectancy; I think that's too simple. Saudi-Arabia scores better than e.g. Latvia and a number of other eastern-European countries. Last I checked Latvia wasn't in the business of chopping up troublesome journalists in embassies or preventing women driving a car by law because their fannies can't handle it. Syria, Russia, and North Korea all score higher than Indonesia and a number of other countries which certainly have issues, but not Syria, Russia, or North-Korean style issues.
That PDF you linked doesn't really explain anything; as you mentioned things like "access to justice" isn't really defined well enough, but that link contains the sources it used for these figures.
For justice it used https://v-dem.net/ – I didn't really look beyond this and in to the methodology of V-Dem.
Re: life expectancy; I think that's too simple. Saudi-Arabia scores better than e.g. Latvia and a number of other eastern-European countries. Last I checked Latvia wasn't in the business of chopping up troublesome journalists in embassies or preventing women driving a car by law because their fannies can't handle it. Syria, Russia, and North Korea all score higher than Indonesia and a number of other countries which certainly have issues, but not Syria, Russia, or North-Korean style issues.