condition mean min max ZT0-3 89.112143 89.112143 89.112143 ZT4-7 105.141189 105.141189 105.141189 ZT8-11 139.1410285 139.1410285 139.1410285 ZT12-15 110.7352055 110.7352055 110.7352055 ZT16-19 116.8685885 116.8685885 116.8685885 ZT20-23 100.67468550000001 100.67468550000001 100.67468550000001