实验动物设施换气次数检测能力验证结果评价
刘巍1,2()(), 张心妍1,2, 侯丰田1,2, 许中衎1,2, 马丽颖1,2()()
Evaluation of Proficiency Validation Results for Air Change Rate Testing in Laboratory Animal Facilities
LIU Wei1,2()(), ZHANG Xinyan1,2, HOU Fengtian1,2, XU Zhongkan1,2, MA Liying1,2()()

图3. 结果分布尧敦图
注：图中的内、外圈椭圆分别表示95%和99%概率的置信区域，椭圆的中心为2个房间中位值的交点将各实验室的结果对输入坐标体系，尧敦图中每个实验室的结果对用圆点表示，其中有2家实验室对应的是同一圆点（即同数值）。

Figure 3. Youden plot of result distribution
Note：The inner and outer ellipses in the graph represent confidence regions with probabilities of 95% and 99%， respectively. The center of the ellipses corresponds to the intersection point of the median values of the two rooms. All laboratory results are plotted on this coordinate system， with each laboratory's result represented by a data point in the Youdun diagram. Two laboratories correspond to the same data point （i.e.， the same value）.