The average width of the high albedo area around the Swiss cheese features changes throughout its lifetime. In the first trimester the width was calculated to be 12.14 ± 1.44 meters wide, the second trimester was 32.96 ± 4.02 meters wide, and in the final trimester the average width was 55.48 ± 6.98 meters. The Hapke's reflectance theory was used to calculate the brightness of the features. During the first trimester, the halos were 4 +/- .3% brighter than the non-halo areas. Then in the second trimester the halos became more prominent at 7 +/- .7% brighter. Toward the end of their life they were the brightest recorded at 8 +/- .6% brighter than the surrounding topography. The halos are brighter than the surrounding region due to the impurities in the ice. The global dust storm filled the CO2 ice with sand and increased the grain size of the ice crystals.