condition mean min max ZT0-3 0.64954 0.64954 0.64954 ZT4-7 0.90401 0.90401 0.90401 ZT8-11 2.197285 2.197285 2.197285 ZT12-15 0.0 0.0 0.0 ZT16-19 1.586325 1.586325 1.586325 ZT20-23 0.3918115 0.3918115 0.3918115