In this animation of total ozone, the luminance values of the colors bounding areas of missing data are used in interpolating over these regions. The missing data are mapped to the grayscale portion of the color map. Note: Total ozone as measured by Nimbus-7 TOMS during the period 1-1-1992 through 12-31-1992. Animator: Ray Twiddy (Hughes STX), Pamela ONeil (NASA). Scientist: Richard McPeters (NASA/GSFC). Platforms/Sensors/Data Sets: Nimbus-7/TOMS.