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Fig. 4

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Correlation diagrams for the transit parameters deduced from the individual MCMC analysis of the 23 transit light curves. Top left: transit depth vs. transit impact parameter. Top right: transit duration vs. transit impact parameter. Bottom left: transit duration vs. transit depth. Bottom right: TTV (observed minus calculated transit timing) vs. transit duration. The filled black and open red symbols correspond, respectively, to the TRAPPIST and Euler light curves.

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