condition mean min max ZT0-3 5197.1 5197.1 5197.1 ZT4-7 4577.3 4577.3 4577.3 ZT8-11 4435.35 4435.35 4435.35 ZT12-15 4453.55 4453.55 4453.55 ZT16-19 4419.75 4419.75 4419.75 ZT20-23 4849.700000000001 4849.700000000001 4849.700000000001