condition mean min max ZT0-3 109.32822 109.32822 109.32822 ZT4-7 49.81044 49.81044 49.81044 ZT8-11 44.956101000000004 44.956101000000004 44.956101000000004 ZT12-15 55.8252475 55.8252475 55.8252475 ZT16-19 66.5594095 66.5594095 66.5594095 ZT20-23 49.153602 49.153602 49.153602