The highest temperature in Yichun City on April 1st is 10°C, and the lowest temperature is -3°C. What is the temperature difference in this day?
宜春市4月1日的最高温度10℃，最低温度-3℃，这一天的温差是多少℃．
<gadget id="calculator">10 - (-3)</gadget>
<output>13</output>

<result>13</result>