condition mean min max ZT0-3 0.23678 0.1835985 0.2899615 ZT4-7 0.966039 0.966039 0.966039 ZT8-11 1.40258 1.40258 1.40258 ZT12-15 0 0 0 ZT16-19 0.6136385 0.6136385 0.6136385 ZT20-23 1.487775 1.487775 1.487775