condition mean min max ZT0-3 0.72482425 0.6492899999999999 0.8003585 ZT4-7 1.12671 1.12671 1.12671 ZT8-11 1.12466 1.12466 1.12466 ZT12-15 0 0 0 ZT16-19 0.6935055 0.6935055 0.6935055 ZT20-23 1.3960650000000001 1.3960650000000001 1.3960650000000001