How well do you know coordinate systems? A well-known coordinate system is used for most of this puzzle, but a relatively new one (which doesn’t use numbers) is used to solve the final question. There’s a book cipher element to this puzzle too, which you will see in the position numbers below.
The puzzle
Complete the following fields.
| Co-ordinates | Position | Person name | Letter | 
|---|---|---|---|
| 51.50072, -0.12722 | 1,1 | ||
| -19.26452, 146.81745 | 1,2 | ||
| -33.92520, 18.42380 | 1,1 | ||
| 40.93522, -73.90260 | 1,1 | ||
| 51.50884, -0.13931 | 2,3 | ||
| -32.05403,115.74161 | 1,7 | ||
| -37.81983, 144.98156 | 2,1 | ||
| 51.5424, -0.1478 | 2,7 | ||
| -35.28145, 149.14955 | 1,6 | ||
| 42.28875, 3.27819 | 1,1 | ||
| 45.42267, -75.69396 | 2,1 | ||
| 58.01858, 14.46269 | 2,1 | ||
| 53.47672, -2.23603 | 1,2 | ||
| -41.28203, 174.77626 | 2,8 | ||
| 45.81180, 9.07935 | 1,4 | 
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