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Table 2

Normalized reflectivity gradient S′ (see text for definition) for the spectra corresponding to the four rotational phases.

Rot. phase S′[%/1000 Å]

Phase 1 3.52 ± 0.16
Phase 2 3.11 ± 0.35
Phase 3 2.95 ± 0.31
Phase 4 3.47 ± 0.17

Notes. The errors are only based on dispersion of the data points, the systematic error is 0.65%/1000 Å (see text for details).

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