condition mean min max ZT0-3 0.11421125 0.0 0.2284225 ZT4-7 0.3803755 0.3803755 0.3803755 ZT8-11 0.3766485 0.3766485 0.3766485 ZT12-15 0 0 0 ZT16-19 0.150151 0.150151 0.150151 ZT20-23 0.0 0.0 0.0