condition mean min max ZT0-3 0.1916339 0.1916339 0.1916339 ZT4-7 0.102027 0.102027 0.102027 ZT8-11 0.5571225 0.5571225 0.5571225 ZT12-15 8.60966 8.60966 8.60966 ZT16-19 22.44345 22.44345 22.44345 ZT20-23 0.6430575000000001 0.6430575000000001 0.6430575000000001