condition mean min max ZT0-3 43.55 43.55 43.55 ZT4-7 50.7 50.7 50.7 ZT8-11 49.05 49.05 49.05 ZT12-15 64.1 64.1 64.1 ZT16-19 40.0 40.0 40.0 ZT20-23 53.900000000000006 53.900000000000006 53.900000000000006