condition mean min max ZT0-3 0.63490575 0.561782 0.7080295000000001 ZT4-7 0.427578 0.427578 0.427578 ZT8-11 0.283839 0.283839 0.283839 ZT12-15 0 0 0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.9795575000000001 0.9795575000000001 0.9795575000000001