Matching planet labels

[MarcoP]

I've also found some charts in a 1451 MS, I can't understand the logic of the upper right chart, it lists the planets and the signs as if randomly ordered?

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That diagram illustrates the four elements. Months are mapped to the elements according to the four seasons (Spring/Air, Summer/Fire, Autumn/Earth, Winter/Water). Traditionally, zodiac signs are assigned to the four elements by linking four consecutive signs to the four different elements, so that signs belonging to the same element are 120 degrees away. Since the two systems for months and signs are different, the result of showing them together on a single diagram can only be puzzling.

   

In the zodiac on the right (from the You are not allowed to view links. Register or Login to view.), the four elements are represented by the background colour of each sign (e.g. red=fire for Aries, Leo, Sagittarius). A much clearer solution in my opinion.