condition mean min max ZT0-3 0.31339375 0.3097325 0.317055 ZT4-7 0.3230555 0.3230555 0.3230555 ZT8-11 0.6364205000000001 0.6364205000000001 0.6364205000000001 ZT12-15 0 0 0 ZT16-19 0.312619 0.312619 0.312619 ZT20-23 0.6271515 0.6271515 0.6271515