condition mean min max ZT0-3 0.464119 0.3740375 0.5542005 ZT4-7 0.374948 0.374948 0.374948 ZT8-11 0.8433135 0.8433135 0.8433135 ZT12-15 0 0 0 ZT16-19 0.8283575000000001 0.8283575000000001 0.8283575000000001 ZT20-23 0.742195 0.742195 0.742195