condition mean min max ZT0-3 160.75 160.75 160.75 ZT4-7 145.6 145.6 145.6 ZT8-11 187.55 187.55 187.55 ZT12-15 170.55 170.55 170.55 ZT16-19 199.15 199.15 199.15 ZT20-23 147.0 147.0 147.0