condition mean min max ZT0-3 1363.35 1363.35 1363.35 ZT4-7 907.7 907.7 907.7 ZT8-11 776.65 776.65 776.65 ZT12-15 893.6500000000001 893.6500000000001 893.6500000000001 ZT16-19 1326.5 1326.5 1326.5 ZT20-23 1530.85 1530.85 1530.85