英文版XR判读准则

一、1 point more than 3 standard deviations from centerline
二、7 points in a row on same side of centerline
三、6 points in a row ,all increasing or all decreasing
四、14 points in a row, alternating up and down
五、2 out of 3 points > 2 standard deviations from centerline (Same side)
六、4 out of 5 points > 1 standard deviation from centerline (Same side)
七、15 points in a row within 1 standard deviation of centerline (Either side)
八、8 points in a row > 1 standard deviation from centerline (Either side)