condition mean min max ZT0-3 1.2661425 1.25891 1.2733750000000001 ZT4-7 1.0813635000000001 1.0813635000000001 1.0813635000000001 ZT8-11 1.281165 1.281165 1.281165 ZT12-15 0 0 0 ZT16-19 2.01362 2.01362 2.01362 ZT20-23 0.8956215000000001 0.8956215000000001 0.8956215000000001