condition mean min max ZT0-3 0.1358945 0.1298285 0.139516 ZT4-7 0.5127900000000001 0.5127900000000001 0.5127900000000001 ZT8-11 0.267173 0.267173 0.267173 ZT12-15 0.14506325 0.0 0.2901265 ZT16-19 0.1245605 0.1245605 0.1245605 ZT20-23 0.71845 0.71845 0.71845