Dear Authors

I have now examined the reviews and your responses to them. Overall the reviewers are supportive of your manuscript, but there are some concerns I would like you to focus on in your revised manuscript, and to explain in your cover letter. Most importantly, please address the issues around factorial design in report 2. Please show in your revised text all the changes that have been made. A further review will then be undertaken.

best wishes

Mathew

Dear Authors

thank you for the revised ms and detailed comments. You have managed to address the key points of the reviews and the ms is nearly ready for publication. It does need a final edit to correct small errors, some of which are noted below. Please make the necessary adjustments and submit a final checked version of the ms.

best wishes

Mathew

l. 54 - remove 'in"
l. 112 change a to are
l. 113 "`~" ?
Added spaces between numbers and units, e.g. 100 km
l. 143 - not clear $?
L. 248 affect
l. 359 'moderate'?
l. 361-3 - garbled sentence
L. 619 - not clear what Lasslop found that was different - rephrase
l. 686 - garbled - remove 'are'?
check all references - Kelly and Harrison is not in the bibliography of the paper