condition mean min max ZT0-3 0.7722502499999999 0.605352 0.9391484999999999 ZT4-7 0.9421625 0.9421625 0.9421625 ZT8-11 0.6908235 0.6908235 0.6908235 ZT12-15 0 0 0 ZT16-19 0.67977 0.67977 0.67977 ZT20-23 0.3415975 0.3415975 0.3415975