condition mean min max ZT0-3 89.539834 89.539834 89.539834 ZT4-7 84.0688095 84.0688095 84.0688095 ZT8-11 101.46010150000001 101.46010150000001 101.46010150000001 ZT12-15 112.060483 112.060483 112.060483 ZT16-19 109.729574 109.729574 109.729574 ZT20-23 106.464766 106.464766 106.464766