condition mean min max ZT0-3 0.9073475 0.9073475 0.9073475 ZT4-7 0.141191 0.141191 0.141191 ZT8-11 0.2287855 0.2287855 0.2287855 ZT12-15 0.0 0.0 0.0 ZT16-19 0.4902165 0.4902165 0.4902165 ZT20-23 0.731538 0.731538 0.731538