condition mean min max ZT0-3 180.12195172499997 130.9360391 229.30786435 ZT4-7 180.70147742 122.73638124 238.6665736 ZT8-11 44.3448564125 30.49070666 58.199006165 ZT12-15 57.70077269000001 42.702741335 72.69880404500002 ZT16-19 108.3079984275 102.9406412 113.675355655 ZT20-23 69.1920671025 55.53826458 82.845869625