Q 1:

Law: continuity, symmetry and monotony

9: 00 7.366 meters

12:14: 30 3.674m.

15: 00 6.05m.

Question 2:

East longitude 1 10, north latitude 18 (Hainan) and south latitude 2 (Malaysia).

Question 3:

Attachment 2: It may be 10 June 6th, 79 east longitude and 39 north latitude.

Attachment 3: It may have been taken on February 25th at 65438 E+0 10 N 59.

Question 4:

It may have been taken at 65438+1October 30th, east longitude 130, and north latitude 22.