condition mean min max ZT0-3 60.45 60.45 60.45 ZT4-7 50.7 50.7 50.7 ZT8-11 49.8 49.8 49.8 ZT12-15 56.75 56.75 56.75 ZT16-19 61.25 61.25 61.25 ZT20-23 47.900000000000006 47.900000000000006 47.900000000000006