condition mean min max ZT0-3 40.373400000000004 40.373400000000004 40.373400000000004 ZT4-7 47.3883 47.3883 47.3883 ZT8-11 41.376450000000006 41.376450000000006 41.376450000000006 ZT12-15 42.71535 42.71535 42.71535 ZT16-19 36.82815 36.82815 36.82815 ZT20-23 36.4379 36.4379 36.4379