condition mean min max ZT0-3 38.18925 34.19315 42.18535 ZT4-7 21.419150000000002 21.419150000000002 21.419150000000002 ZT8-11 13.9281 13.9281 13.9281 ZT12-15 0 0 0 ZT16-19 20.87655 20.87655 20.87655 ZT20-23 30.18055 30.18055 30.18055