condition mean min max ZT0-3 42.811236 42.811236 42.811236 ZT4-7 53.629471 53.629471 53.629471 ZT8-11 74.9802305 74.9802305 74.9802305 ZT12-15 80.762967 80.762967 80.762967 ZT16-19 72.10432449999999 72.10432449999999 72.10432449999999 ZT20-23 68.4211265 68.4211265 68.4211265