condition mean min max ZT0-3 16.63409682975 13.0250131895 20.24318047 ZT4-7 13.0706728025 9.005493340000001 17.135852265 ZT8-11 41.6764891875 29.474090035 53.87888834 ZT12-15 56.7123146125 56.304395240000005 57.120233985 ZT16-19 63.745176637499995 59.511519015 67.97883426 ZT20-23 70.929348205 70.84061333 71.01808308