condition mean min max ZT0-3 820.05 820.05 820.05 ZT4-7 786.5 786.5 786.5 ZT8-11 791.9 791.9 791.9 ZT12-15 811.35 811.35 811.35 ZT16-19 1043.7 1043.7 1043.7 ZT20-23 933.3 933.3 933.3