On a certain day, the weather forecast reports that the temperature in Shenyang is -4°C to 2°C, so what is the temperature difference in Shenyang that day?
某日，天气预报报道沈阳的气温为-4℃～2℃，那么沈阳这天的温差为多少℃
<gadget id="calculator">2 - (-4)</gadget>
<output>6</output>

<result>6</result>