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Preprocessing .lux - Breeding grounds without night


Hi everyone,


I used "twilightCalc" to preprocess my .lux files and it worked beautiful for all my tags except one.

From June 3rd to July 31st I cannot define day vs. night because the light levels are essentially the same. This bird is going so far north that basically there isn't' night; that's my guess.


I'm not quite sure how to deal with these data. Should I exclude this period from my data?

Any advice will be appreciated.

Many thanks!


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  You should definitely exclude twilights with sun being very high up. For FLightR you can also make a higher threshold while defining twilights - it usually works fine.

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