Festival solar terms welcome.

=5.2 (ten thousand people);

A: On June 38+10/October 3, the number of people was 52,000.

②65438+ 10 month1:0.9+3.1= 40,000 people;

65438+1October 2: 4+ 1.78 = 57800 people;

65438+1October 3: 5.78-0.58 = 52,000 people;

65438+1October 4th: 5.2-0.8 = 44,000 people;

65438+1October 5: 4.4-1= 34,000 people;

65438+1October 6: 3.4- 1.6= 1.8 million;

65438+1October 7th:1.8-1.15 = 0.65 million;

Therefore, the largest number of tourists is 10 February 2, reaching 57800; The lowest number of tourists is 65438+1October 7th, reaching 6500;

③ 0.9+4+5.78+5.2+4.4+3.4+1.8+0.65 = 261.3 million people;

A: Huangshan Scenic Area received 26. 13 tourists in these eight days.

So the answer is: 15.2, 22, 5.78, 37 and 0.65.