condition mean min max ZT0-3 0.59419 0.5895195 0.5988605 ZT4-7 0.899876 0.899876 0.899876 ZT8-11 1.42438 1.42438 1.42438 ZT12-15 0 0 0 ZT16-19 1.3610905 1.3610905 1.3610905 ZT20-23 1.1101100000000002 1.1101100000000002 1.1101100000000002