condition mean min max ZT0-3 21.204187757499998 13.64375533 28.764620185 ZT4-7 43.3659294475 40.57649225 46.155366645 ZT8-11 29.3917601275 24.593980515000002 34.18953974 ZT12-15 8.2909015595 6.5031182085 10.078684910499998 ZT16-19 11.111000773499999 10.896481371 11.325520176 ZT20-23 11.135409603749999 9.607945337499999 12.66287387