What is the minimum size requirement for SkyFi imagery?

For daytime imagery, Existing Images must cover a minimum area of 5 sq. km. For Planet SkySat Existing Images must be at least 25 sq. km. New Images must cover at least 25 sq. km, and all areas of interest should be at least 2 sq. km in width. All SAR imagery requires a minimum area of 16 sq. km, with dimensions of 4 x 4 sq. km.