condition mean min max ZT0-3 503.7 503.7 503.7 ZT4-7 446.5 446.5 446.5 ZT8-11 404.9 404.9 404.9 ZT12-15 559.3 559.3 559.3 ZT16-19 810.0 810.0 810.0 ZT20-23 719.6500000000001 719.6500000000001 719.6500000000001