condition mean min max ZT0-3 9135.7 9135.7 9135.7 ZT4-7 7111.8 7111.8 7111.8 ZT8-11 6535.05 6535.05 6535.05 ZT12-15 5885.65 5885.65 5885.65 ZT16-19 7852.5 7852.5 7852.5 ZT20-23 8612.95 8612.95 8612.95