condition mean min max ZT0-3 0.4682965 0.3161035 0.6204895 ZT4-7 0.1608995 0.1608995 0.1608995 ZT8-11 0.6339440000000001 0.6339440000000001 0.6339440000000001 ZT12-15 0 0 0 ZT16-19 0.310177 0.310177 0.310177 ZT20-23 0.627335 0.627335 0.627335