condition mean min max ZT0-3 40.324301750000004 30.38213648 50.26646702 ZT4-7 32.486423965 30.4981546 34.47469333 ZT8-11 43.533426427500004 39.230311195 47.83654166 ZT12-15 74.600110615 69.70823243 79.4919888 ZT16-19 92.36208930000001 81.62834465 103.09583395000001 ZT20-23 99.9750422675 99.48359417 100.466490365