condition mean min max ZT0-3 0.06840209125 0.0 0.1368041825 ZT4-7 0.039800782 0.0 0.079601564 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0420266695 0.0323774915 0.0516758475 ZT16-19 0.09757592574999999 0.0 0.19515185149999997 ZT20-23 0.038712332 0.0 0.077424664