condition mean min max ZT0-3 0.33393475 0.2190375 0.448832 ZT4-7 0.0 0.0 0.0 ZT8-11 0.114119 0.114119 0.114119 ZT12-15 0 0 0 ZT16-19 0.1105395 0.1105395 0.1105395 ZT20-23 0.664335 0.664335 0.664335