condition mean min max ZT0-3 1073.8600000000001 1073.8600000000001 1073.8600000000001 ZT4-7 965.8875 965.8875 965.8875 ZT8-11 785.508 785.508 785.508 ZT12-15 715.1185 715.1185 715.1185 ZT16-19 973.662 973.662 973.662 ZT20-23 997.8985 997.8985 997.8985