condition mean min max ZT0-3 0.01264215 0.0 0.0252843 ZT4-7 0.052744 0.052744 0.052744 ZT8-11 0.0 0.0 0.0 ZT12-15 0 0 0 ZT16-19 0.050839 0.050839 0.050839 ZT20-23 0.1028215 0.1028215 0.1028215