condition mean min max ZT0-3 6.60416 4.372145 8.836175 ZT4-7 4.757820000000001 4.757820000000001 4.757820000000001 ZT8-11 3.9932350000000003 3.9932350000000003 3.9932350000000003 ZT12-15 0 0 0 ZT16-19 5.2707 5.2707 5.2707 ZT20-23 4.785304999999999 4.785304999999999 4.785304999999999