condition mean min max ZT0-3 13.905569999999999 5.290369999999999 29.4347 ZT4-7 57.12665 57.12665 57.12665 ZT8-11 92.22235 92.22235 92.22235 ZT12-15 20.880075 14.2308 27.52935 ZT16-19 7.250835 7.250835 7.250835 ZT20-23 3.5829050000000002 3.5829050000000002 3.5829050000000002