condition mean min max ZT0-3 43.034812 43.034812 43.034812 ZT4-7 44.912015999999994 44.912015999999994 44.912015999999994 ZT8-11 42.516673499999996 42.516673499999996 42.516673499999996 ZT12-15 40.871132 40.871132 40.871132 ZT16-19 45.40206 45.40206 45.40206 ZT20-23 41.08578 41.08578 41.08578