condition mean min max ZT0-3 452.25 452.25 452.25 ZT4-7 440.2 440.2 440.2 ZT8-11 415.5 415.5 415.5 ZT12-15 419.45000000000005 419.45000000000005 419.45000000000005 ZT16-19 295.0 295.0 295.0 ZT20-23 410.1 410.1 410.1