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Fig. 9

image

Contour plot of the χ2 as a function of Ec and R for the LOB1 (1021<NH< 1022 cm-2) spectrum (black) and the MOB (1023<NH< 1024 cm-2) spectrum (red). Continuous lines show the 1σ (68%) confidence region, dotted lines show the 90% confidence region. The crosses mark the best fit position.

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