|name||8-9 m||10-11.5 m||Ratio|
|A||0.944 0.003||0.879 0.005||0.931 0.037|
|B||1.003 0.003||0.928 0.004||0.926 0.027|
|C||1.093 0.003||1.018 0.004||0.931 0.028|
|D||0.839 0.006||0.803 0.005||0.958 0.039|
|The values of visibility in each wavelength range are the weighted means taken over all spectral channels in that range, and uncertainties quoted are the standard errors on the weighted mean from statistical uncertainty only (uncertainty in the absolute visibility is higher due to calibration uncertainties). Final error on ratio includes error from the calibrator ratios discussed in Sect. 2.4 and a 1.3% error on the spectral slope of IRS observations (Beichman et al. 2006), as well as the statistical errors from each wavelength range. The predicted visibility arises from assuming that (see Eq. (4)).|
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