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Table 2

Summary of the best-fit transit parameters of GJ1214b from LBC photometry.

Transit Band Nobs σ [mmag] χ2 u1 k = Rp/R k = k + Δkmax

T1, 2012/03/29 B 185 1.55 197.3 1.11 0.60 ± 0.07 0.1158 ± 0.0013
T1, 2012/03/29 B 185 1.56 200.2 1.12 0.5259 0.1170 ± 0.0009 0.1159 ± 0.0009
T1, 2012/03/29 R 207 0.57 282.2 1.39 0.42 ± 0.02 0.1170 ± 0.0004 0.1159 ± 0.0004

T2, 2012/05/17 B 64 1.32 64.0 1.05 0.5259 0.1186 ± 0.0010
T2, 2012/05/17 R 123 0.76 266.4 2.22 0.4326 0.1178 ± 0.0004

combined B 249 1.50 273.1 1.11 0.5259 0.1176 ± 0.0007 0.1165 ± 0.0007
combined R 330 0.65 575.5 1.76 0.4326 0.1175 ± 0.0003 0.1164 ± 0.0003
combined, RP B 249 1.50 273.1 1.11 0.5259 0.1176 ± 0.0009 0.1165 ± 0.0009
combined, RP R 330 0.65 575.5 1.76 0.4326 0.1175 ± 0.0004 0.1164 ± 0.0004

Notes. The columns list: the ID code and evening date of the transit (or combined when the two transits were fitted together), the photometric channel (Bessel B or R), the number of data points analyzed, the RMS σ of the residuals from the best-fit model, the χ2 and reduced χ2 of the residuals, the linear LD coefficient u1 (marked with when it is input as a Gaussian prior around its theoretical value from Claret et al. 2012), the relative radius k of the best-fit model, and the relative radius k after the correction for unocculted starspots has been applied (Ballerini et al. 2012; see Sect. 3.5 for details). The reported χ2 and are evaluated from the nominal error bars once the bump-like feature has been removed (see Sect. 3.1). The RP error analysis is based on a residual-permutation algorithm (see Sect. 3.3 for details).

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