condition mean min max ZT0-3 0.2925085 0.0847245 0.5002925 ZT4-7 0.679447 0.679447 0.679447 ZT8-11 0.4215325 0.4215325 0.4215325 ZT12-15 0 0 0 ZT16-19 0.333828 0.333828 0.333828 ZT20-23 0.0 0.0 0.0