condition mean min max ZT0-3 4760.59586225 4142.016723 5379.1750015 ZT4-7 6779.2844967500005 6777.783239 6780.785754500001 ZT8-11 4235.08871 3101.785364 5368.392056 ZT12-15 870.891940275 571.9814146000001 1169.80246595 ZT16-19 544.1418911 435.9174759499999 652.36630625 ZT20-23 726.4172158 540.3367284 912.4977032