Fig. 9

Average equatorial brightness temperatures at band 14 in the nightside. Black points with error bars are the average values with standard deviations at every 0.5 H bin. The black dashed and dotted lines show surface temperature models of lunar rock and regolith at the equator, respectively. The blue, orange, green, red, purple, and brown solid lines are brightness temperature curves of mixture models with rock ratios of 0.2, 0.5, 2, 5, 20, and 50%