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Fig. 21

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Plot of the χ2 difference between simulations obtained with the best-fit parameters of the G-scenario (black line) or the C-scenario (green line) as a function of the main atmosphere temperature. Horizontal dotted black lines are plotted at 1, 2, and 3σ from each best fit (; ), and in both cases the χ2 difference exceeds 1σ with temperatures below ~6100 K.

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