condition mean min max ZT0-3 0.47622050000000005 0.3518855 0.6005555 ZT4-7 0.8445045 0.8445045 0.8445045 ZT8-11 0.841823 0.841823 0.841823 ZT12-15 0 0 0 ZT16-19 1.65464 1.65464 1.65464 ZT20-23 0.592258 0.592258 0.592258