condition mean min max ZT0-3 90.089274 90.089274 90.089274 ZT4-7 92.3794155 92.3794155 92.3794155 ZT8-11 74.239655 74.239655 74.239655 ZT12-15 95.6628255 95.6628255 95.6628255 ZT16-19 74.656886 74.656886 74.656886 ZT20-23 83.4429315 83.4429315 83.4429315