Obs. : 2017-01-03
Planet	Ly alpha (photons/cm^2/sec)
Mercury    1.999e+11
Venus      1.951e+11
Earth      1.941e+11
Mars       1.951e+11
Jupiter    1.967e+11
Saturn     1.982e+11
Uranus     1.934e+11
Neptune    1.951e+11
Pluto      1.995e+11