condition mean min max ZT0-3 0.7464712499999999 0.6759835 0.816959 ZT4-7 1.8183099999999999 1.8183099999999999 1.8183099999999999 ZT8-11 1.2519035 1.2519035 1.2519035 ZT12-15 0 0 0 ZT16-19 1.144725 1.144725 1.144725 ZT20-23 0.2430985 0.2430985 0.2430985