condition mean min max ZT0-3 10.272825000000001 9.474450000000001 11.071200000000001 ZT4-7 4.545865 4.545865 4.545865 ZT8-11 4.369524999999999 4.369524999999999 4.369524999999999 ZT12-15 0 0 0 ZT16-19 6.3103750000000005 6.3103750000000005 6.3103750000000005 ZT20-23 6.97789 6.97789 6.97789