condition mean min max ZT0-3 0.3130075 0.310415 0.3156 ZT4-7 2.12521 2.12521 2.12521 ZT8-11 0.526099 0.526099 0.526099 ZT12-15 0 0 0 ZT16-19 0.207333 0.207333 0.207333 ZT20-23 0.0 0.0 0.0