condition mean min max ZT0-3 1016.9000000000001 1016.9000000000001 1016.9000000000001 ZT4-7 980.1 980.1 980.1 ZT8-11 825.9000000000001 825.9000000000001 825.9000000000001 ZT12-15 907.05 907.05 907.05 ZT16-19 846.65 846.65 846.65 ZT20-23 808.55 808.55 808.55