condition mean min max ZT0-3 0.798855 0.798855 0.798855 ZT4-7 1.103215 1.103215 1.103215 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.975495 0.975495 0.975495 ZT20-23 2.392437 2.392437 2.392437