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Fig. 4 | Animal Biotelemetry

Fig. 4

From: How to improve the accuracy of height data from bird tracking devices? An assessment of high-frequency GPS tracking and barometric altimetry in field conditions

Fig. 4

Difference between GPS and barometric height in relation to height above ground level (a.g.l.; range − 40 to 300 m) for OT-25 GPS tags deployed on red kites in low- and high-frequency sampling (bins of 20 m). Only flight positions were considered. Thick horizontal lines indicate medians and boxes the ranges between the 1st and the 3rd quartiles; whiskers extend to the most extreme data point at a distance of no more than 1.5 times the interquartile range from the box; data points outside of whiskers were omitted. Sample size: 126,278 positions for low-frequency; 1,032,956 for high-frequency. Tick marks above the x-axis indicate deciles

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Animal Biotelemetry

ISSN: 2050-3385