condition mean min max ZT0-3 108.079354 108.079354 108.079354 ZT4-7 116.21764250000001 116.21764250000001 116.21764250000001 ZT8-11 102.13056750000001 102.13056750000001 102.13056750000001 ZT12-15 76.370311 76.370311 76.370311 ZT16-19 100.496395 100.496395 100.496395 ZT20-23 90.1120855 90.1120855 90.1120855