condition mean min max ZT0-3 800.5 800.5 800.5 ZT4-7 667.2 667.2 667.2 ZT8-11 725.45 725.45 725.45 ZT12-15 699.1500000000001 699.1500000000001 699.1500000000001 ZT16-19 792.15 792.15 792.15 ZT20-23 728.45 728.45 728.45