The gray band marks the range of LAT on-sky exposures for each time bin of 3 day cadence. The pink bands, in order, mark the time ranges of the original rocking angle mission profile (details on the observatory sky-survey profiles can be found at https://fermi.gsfc.nasa.gov/ssc/observations/types/allsky/), the Galactic center monitoring, and the time gap between the solar panel anomaly and the beginning of the new survey mode. Note that some time bins have a minimum exposure value of zero: this means that some part of the sky was not observed during that time interval. The exposure maps are computed at the central energy in the 0.1–100 GeV band.