**Table 4:** Integrated emissivities for an Earth-like spectrum. Values are in units of photons cm^-3 s^-1.
Parameterization/Approx.	E>100 Mev	E>100 GeV	E>315 GeV
Blattnig et al.	3.2E-25	2.2E-28	4.7E-29
Kamae et al.	4.8E-25	1.8E-29	2.6E-30
Aharonian	4.0E-25	2.2E-29	3.1E-30
Stephen and Badwhar (from Blattnig et al.)	2.2E-25	1.8E-31	1.9E-33

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