condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.112083 0.112083 0.112083 ZT12-15 0.39927275 0.112159 0.6863865 ZT16-19 0.0523545 0.0523545 0.0523545 ZT20-23 0.0 0.0 0.0