Table 3 Measurements of soiling on glass coupons displayed for 5 ½ months in the showcase of Bayeux embroidery
Coupon orientation | Mean Sz (µm) | Median Sz (µm) | Surface coverage (%) | Fibres concentration (fibers cm−2) | Haze (%) |
|---|---|---|---|---|---|
Horizontal | 1.64 ± 2.9 | 0.39 | 0.45 ± 0.05 | 18.3 ± 1.5 | 0.49 ± 0.10 |
Vertical | 0.28 ± 0.03 | 0.26 | 0.03 ± 0.006 | 1.2 ± 0.2 | 0.35 ± 0.12 |