condition mean min max ZT0-3 0.4712575 0.3945605 0.5479545 ZT4-7 0.509775 0.509775 0.509775 ZT8-11 0.3631545 0.3631545 0.3631545 ZT12-15 0 0 0 ZT16-19 0.718707 0.718707 0.718707 ZT20-23 0.9725955 0.9725955 0.9725955