It makes more sense in the context of the paper. The previous sentence ends with > [...] since January 1, 2000, there had been 291,237 record high maximum dail

It makes more sense in the context of the paper. The previous sentence ends with > [...] since January 1, 2000, there had been 291,237 record high maximum daily temperatures set, and 142,420 record low minimum daily temperatures, or a ratio of roughly two to one. It seems like "just" shouldn't be in that sentence though.