GEOGCS["WGS 84",DATUM["WGS_1984",SPHEROID["WGS 84",6378137,298.257223563,AUTHORITY["EPSG","7030"]],AUTHORITY["EPSG","6326"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AXIS["Latitude",NORTH],AXIS["Longitude",EAST],AUTHORITY["EPSG","4326"]] -2.8001170508848048e+01, 5.0000000000000001e-03, 0.0000000000000000e+00, 6.8631365099965379e+01, 0.0000000000000000e+00, -5.0000000000000001e-03 HOTVOLC product for volcanic ash cloud detection using the 2-Band method (see Prata, 1989) for the Islande region on 2011-05-23 20:00:00. Show the value of the brightness temperature difference between 10.8 µm and 12.0 µm for each pixel detected as ash contaminated. PIXEL