Table 1.

Details for accordance between GPS and dead-reckoned positions prior to and post correction procedure for data derived from animals using DDs recording tri-axial acceleration and tri-axial magnetic field strength, with 12-bit resolution, at a sampling frequency of 20 Hz with GPS loggers (iGotU GT-120, Mobile Action Technology) recording at 0.2 Hz. Devices (61 g) were collar-mounted in the dogs, and placed on the saddle pad above the withers in the horse

Subject	Mean Error before correction (m)	Mean Error after correction (m)
Dog 1	591	0.13
Dog 2	653	0.11
Dog 3	480	0.53
Horse	1204	0.39
Mean	731.0	0.29
St. Dev	322.5	0.20