condition mean min max ZT0-3 0.65006825 0.5668375 0.733299 ZT4-7 0.5636165 0.5636165 0.5636165 ZT8-11 0.608587 0.608587 0.608587 ZT12-15 0 0 0 ZT16-19 0.36204400000000003 0.36204400000000003 0.36204400000000003 ZT20-23 0.15827145 0.15827145 0.15827145