Lub Yim Hli 31, txoj kev lag luam koom ua lag luam xhlene index yog 61.18.
Raws li lub Yim Hli 31, lub neej lag luam sib xyaw Xylene Performance index yog 61.18, tsis hloov ntawm nag hmo, qis dua 42.55% los ntawm qis tshaj ntawm 33.07 (Plaub Hlis 7, 2020). (Nco tseg: lub sijhawm hais txog lub Cuaj Hlis 1, 2011, los nthuav qhia)
Tus nqi qhov nkhaus rau cov tshuaj lom neeg xhlene los ntawm cov ntaub ntawv lag luam yog raws li hauv qab no:
Source: Tshuaj Kev Lag Luam Network