Temperatures in the past 7 days

(1) Make a broken line statistical chart as follows:

(2) according to the statistics,

(1) The temperature in these seven days is mostly maintained between 40℃ and 42℃.

B, one of these seven days is artificial rainfall, which is August 2 1.

(3) The difference between the highest temperature and the lowest temperature in these seven days:

42℃-36℃=6℃.

So the answer is: (2)40, 42. (3) 6.