condition mean min max ZT0-3 1098.8 1098.8 1098.8 ZT4-7 946.4 946.4 946.4 ZT8-11 793.9000000000001 793.9000000000001 793.9000000000001 ZT12-15 577.25 577.25 577.25 ZT16-19 382.3 382.3 382.3 ZT20-23 540.7 540.7 540.7