condition mean min max ZT0-3 20.46765 20.46765 20.46765 ZT4-7 34.376850000000005 34.376850000000005 34.376850000000005 ZT8-11 11.0408 11.0408 11.0408 ZT12-15 5.55277 5.55277 5.55277 ZT16-19 10.010315 10.010315 10.010315 ZT20-23 15.43845 15.43845 15.43845