In addition to the seasonal pattern of the biologists expeditions as noted by simon and Yonge, they almost always go to three different locations, but occasionally two (once all three) explorers go to the same location. This occurs most often (but not only or always) on weeks that are multiples of 13, which correspond to the exact middle of a “season”.
In addition to the seasonal pattern of the biologists expeditions as noted by simon and Yonge, they almost always go to three different locations, but occasionally two (once all three) explorers go to the same location. This occurs most often (but not only or always) on weeks that are multiples of 13, which correspond to the exact middle of a “season”.