p3 question on the paper

From: Dr. Joe Wong, c.wong@qut.edu.au
Date: 11/18/97
Time: 5:12:23 AM
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I have some questions about this paper.

1. The authors stated that the scale in the diagrams (unidentitied)is in arbitrary units. Please explain. How is the scale compared with the ambient level?

2. The authors stated that "the ratio of accumulated UV dose between different groups remain approximately constant..." I cannot derive this result from the data presented in the paper.

3. The authors also stated that "holidays...result in 20 fold higher UV exposure ... for indoor worker". Can you let us know the effect of the climatic conditions? As these experiments were performed at different location, a fair comparison should consider the difference in the ambient levels.

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