condition mean min max ZT0-3 0.8833555 0.8777125 0.8889985 ZT4-7 0.8586825 0.8586825 0.8586825 ZT8-11 0.799248 0.799248 0.799248 ZT12-15 0 0 0 ZT16-19 1.145115 1.145115 1.145115 ZT20-23 0.9389435 0.9389435 0.9389435