I noticed BNF Fr 565 also uses this basic inverted format to describe solstice and the sun's relation to the horizon (and to the local point of reference):
A few pages later (You are not allowed to view links. Register or Login to view.) is quite an unconventional "T-O" map in which Asia is to the left and the "O" has been chopped in half such that the T is pushed into the lower half of the implied circle. The following climatic zones chart is drawn the same way, a half-sphere with seven named zones, rather than the traditional full sphere.
A few pages later (You are not allowed to view links. Register or Login to view.) is quite an unconventional "T-O" map in which Asia is to the left and the "O" has been chopped in half such that the T is pushed into the lower half of the implied circle. The following climatic zones chart is drawn the same way, a half-sphere with seven named zones, rather than the traditional full sphere.