condition mean min max ZT0-3 0.0737304 0.0361907 0.1132295 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0383745 0.0 0.076749 ZT16-19 0.0646225 0.0646225 0.0646225 ZT20-23 0.0 0.0 0.0