The Caesar cipher or shift cipher method uses a simple substitution encryption. This means that every character is substituted by another character according to a specific system. The substitution character is determined by rotating the alphabet. In this case, we use the ROT5 cipher, which concerns the 10 digits. This method is named after the number of rotations, or ROT, which is 5. The numbers would be "rotated" or shifted to another substituted number exactly 5 numbers away. So, for example 0 = 5, 1 = 6, and so on.
To solve the following encrypted coordinates, use the key below it:
87 95.596
669 79.910
You can validate your puzzle solution with certitude.