condition mean min max ZT0-3 116.689 116.689 116.689 ZT4-7 75.81475 75.81475 75.81475 ZT8-11 70.35265 70.35265 70.35265 ZT12-15 120.29410000000001 120.29410000000001 120.29410000000001 ZT16-19 321.1195 321.1195 321.1195 ZT20-23 169.55 169.55 169.55