condition mean min max ZT0-3 0.07416103333333333 0.0286181 0.12530705 ZT4-7 0.1272406 0.1272406 0.1272406 ZT8-11 0.08436450000000001 0.08436450000000001 0.08436450000000001 ZT12-15 0.12287624999999999 0.050232 0.19552049999999999 ZT16-19 0.01361515 0.01361515 0.01361515 ZT20-23 0.01404065 0.01404065 0.01404065