condition mean min max ZT0-3 0.4890025 0.4890025 0.4890025 ZT4-7 0.1793625 0.1793625 0.1793625 ZT8-11 0.1490682 0.1490682 0.1490682 ZT12-15 0.510613 0.510613 0.510613 ZT16-19 1.37083 1.37083 1.37083 ZT20-23 0.7185185000000001 0.7185185000000001 0.7185185000000001