condition mean min max ZT0-3 0.03740175 0.0 0.0748035 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0779455 0.0779455 0.0779455 ZT12-15 0 0 0 ZT16-19 0.151001 0.151001 0.151001 ZT20-23 0.0 0.0 0.0