Fig. 2
From: Studying animal locomotion with multiple data loggers: quantifying time drift between tags
Raw angular velocity data from 4 AGM tags that were simultaneously moved over a 24 h period using a robotic flapping mechanism. Immediately after the tags were corrected for their initial temporal offset, all 4 tags show identical and overlapping gyroscope data (A). However, after 24 h, small differences in the clock frequency among tags led to considerable drift among the loggers (B)