condition mean min max ZT0-3 2745.0 2745.0 2745.0 ZT4-7 7367.9 7367.9 7367.9 ZT8-11 7803.200000000001 7803.200000000001 7803.200000000001 ZT12-15 7728.6 7728.6 7728.6 ZT16-19 5152.65 5152.65 5152.65 ZT20-23 3345.4 3345.4 3345.4