Left: flux time history of η Carinae in the 0.2 to 10 GeV energy band obtained by likelihood analysis. The lower x-axis is in units of orbital phase of the η Carinae binary system, the upper in units of modified Julian day (MJD). The flux error bars are of 1σ type. The gray data points on the right are the phase-shifted counterparts of the first two data points on the left. The dashed vertical line indicates the time of the periastron passage (blue) and the apastron passage (red) of the η Carinae binary system. Right: the same for energies 10 to 300 GeV.