condition mean min max ZT0-3 138.457459 138.457459 138.457459 ZT4-7 266.52961600000003 266.52961600000003 266.52961600000003 ZT8-11 205.322192 205.322192 205.322192 ZT12-15 158.308197 158.308197 158.308197 ZT16-19 76.9596205 76.9596205 76.9596205 ZT20-23 69.952299 69.952299 69.952299