condition mean min max ZT0-3 0.09186581666666667 0.03085475 0.1529527 ZT4-7 0.23637350000000001 0.23637350000000001 0.23637350000000001 ZT8-11 0.21269 0.21269 0.21269 ZT12-15 0.5114265 0.424132 0.5987210000000001 ZT16-19 0.403494 0.403494 0.403494 ZT20-23 0.17698645000000002 0.17698645000000002 0.17698645000000002