condition mean min max ZT0-3 3363.805191 3363.805191 3363.805191 ZT4-7 4023.9556535 4023.9556535 4023.9556535 ZT8-11 4508.772642 4508.772642 4508.772642 ZT12-15 4540.609845 4540.609845 4540.609845 ZT16-19 3278.4671035 3278.4671035 3278.4671035 ZT20-23 3928.09672 3928.09672 3928.09672