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Your task is to rate the quality of the images presented below based on the level of background noise, using the evaluation criteria defined in these instructions and examples. This task can be completed in around 60 seconds.
IMPORTANT: do NOT work on this HIT without carefully reading the instructions first, even if you have worked on our HITs before, because instructions often change from one day to the other.
| Score | Quality | Deterioration |
| 5 | Excellent | Imperceptible |
| 4 | Good | Mild granular noise. |
| 3 | Fair | Dense granular noise. |
| 2 | Poor | Very high levels of granular noise. |
| 1 | Bad | The background noise makes recognition impossible. |
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