三个窗口，第一个窗口显示世界气温数据，第二个窗口左边显示灰度值为156的点，右边显示灰度值不为156的点，第三个窗口左边显示灰度值小于156的点，右边显示灰度值大于156的点。-Three windows, a window displays the world temperature data, the second window on the left shows the gray value of 156 points, the right side of the gray value of 156 points, third window on the left show the gray value is less than 156 point on the right shows the gray value is greater than 156 points.