condition mean min max ZT0-3 41.647049 41.647049 41.647049 ZT4-7 38.820241499999995 38.820241499999995 38.820241499999995 ZT8-11 48.544292999999996 48.544292999999996 48.544292999999996 ZT12-15 45.7161135 45.7161135 45.7161135 ZT16-19 46.141778 46.141778 46.141778 ZT20-23 47.382295 47.382295 47.382295