condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.036219156999999995 0.0 0.07243831399999999 ZT12-15 0.0 0.0 0.0 ZT16-19 0.031067345833333333 0.0 0.062134691666666665 ZT20-23 0.0 0.0 0.0