The is not part of the tibiofemoral joint.

The tibioemoral joint is synovial joint between the distal femur and the proximal tibia is commonly known as the knee joint. The knee joint allows for flexion and extension (and a small degree of medial and lateral rotation).
Posterior tibiofibular ligament is not part of the tibiofemoral joint.

This post might have the info you need:

Ibelieve the answer is relative humidity  because it makes more sense that way. solar flares usually occur in space it doesn't affect the earth, well it could but it wont make a significant damage.  latitude is land it doesnt do anything. prevailing winds, i dont know the correct meaning for this but i doubt that affects the land so it has to be relative humidity.