condition mean min max ZT0-3 0.5280765000000001 0.5280765000000001 0.5280765000000001 ZT4-7 0.36475199999999997 0.36475199999999997 0.36475199999999997 ZT8-11 0.2576535 0.2576535 0.2576535 ZT12-15 0.4138275 0.4138275 0.4138275 ZT16-19 0.5580155 0.5580155 0.5580155 ZT20-23 0.45308350000000003 0.45308350000000003 0.45308350000000003