condition mean min max ZT0-3 26.14018 26.14018 26.14018 ZT4-7 34.0415885 34.0415885 34.0415885 ZT8-11 41.648615 41.648615 41.648615 ZT12-15 42.9615605 42.9615605 42.9615605 ZT16-19 35.087648 35.087648 35.087648 ZT20-23 39.445645 39.445645 39.445645