condition mean min max ZT0-3 0.017865179000000002 0.0 0.035730358000000004 ZT4-7 0.06034779025 0.020076313000000002 0.1006192675 ZT8-11 0.17047286125 0.13915508750000002 0.201790635 ZT12-15 0.303314404 0.25423544099999995 0.352393367 ZT16-19 0.224629858 0.185486031 0.263773685 ZT20-23 0.45666776099999995 0.295219752 0.61811577