condition mean min max ZT0-3 10.664860000000001 10.401050000000001 10.92867 ZT4-7 8.56389 8.56389 8.56389 ZT8-11 8.12735 8.12735 8.12735 ZT12-15 0 0 0 ZT16-19 13.3485 13.3485 13.3485 ZT20-23 10.608775 10.608775 10.608775