condition mean min max ZT0-3 0.38473475 0.364842 0.4046275 ZT4-7 0.3055145 0.3055145 0.3055145 ZT8-11 1.21589 1.21589 1.21589 ZT12-15 0 0 0 ZT16-19 1.159785 1.159785 1.159785 ZT20-23 0.6990755 0.6990755 0.6990755