Obs. : 2013-10-20
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.002e+11
Venus      4.009e+11
Earth      4.200e+11
Mars       4.216e+11
Jupiter    4.191e+11
Saturn     4.033e+11
Uranus     4.279e+11
Neptune    4.230e+11
Pluto      4.042e+11