GPS Accuracy-statistics

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Device Count Trueness
(Average Distance Error)
Standard Deviation
(From mean)
Standard Deviation
(From true)
Average Pace Error
(from 9:00 min/mile) (from 5:30 min/Km)
Footpod (calibrated) 3635 0.18% (9.3 Ft/Mile, 1.8 m/Km) 2.34% (123.6 Ft/Mile, 23.4 m/Km) 2.35% (123.9 Ft/Mile, 23.5 m/Km) 0:13 0:08
Garmin 205 1125 0.47% (24.9 Ft/Mile, 4.7 m/Km) 3.14% (166.0 Ft/Mile, 31.4 m/Km) 3.18% (167.9 Ft/Mile, 31.8 m/Km) 0:17 0:10
Garmin 910XT with Footpod 725 1.28% (67.8 Ft/Mile, 12.8 m/Km) 2.94% (155.4 Ft/Mile, 29.4 m/Km) 3.21% (169.6 Ft/Mile, 32.1 m/Km) 0:17 0:11
iPhone 4s 956 0.90% (47.3 Ft/Mile, 9.0 m/Km) 3.12% (164.9 Ft/Mile, 31.2 m/Km) 3.25% (171.6 Ft/Mile, 32.5 m/Km) 0:18 0:11
Garmin 310XT with Footpod 3635 0.64% (34.0 Ft/Mile, 6.4 m/Km) 3.32% (175.1 Ft/Mile, 33.2 m/Km) 3.38% (178.4 Ft/Mile, 33.8 m/Km) 0:18 0:11
Garmin 610 2085 1.77% (93.3 Ft/Mile, 17.7 m/Km) 3.14% (165.9 Ft/Mile, 31.4 m/Km) 3.61% (190.3 Ft/Mile, 36.1 m/Km) 0:19 0:12
Garmin 310XT no Footpod 1945 0.94% (49.8 Ft/Mile, 9.4 m/Km) 3.94% (208.0 Ft/Mile, 39.4 m/Km) 4.05% (213.9 Ft/Mile, 40.5 m/Km) 0:22 0:13
Samsung Galaxy S3 832 1.28% (67.7 Ft/Mile, 12.8 m/Km) 4.00% (211.4 Ft/Mile, 40.0 m/Km) 4.20% (222.0 Ft/Mile, 42.0 m/Km) 0:23 0:14
Suunto Ambit2 R 1025 1.15% (60.9 Ft/Mile, 11.5 m/Km) 4.08% (215.7 Ft/Mile, 40.8 m/Km) 4.24% (224.1 Ft/Mile, 42.4 m/Km) 0:23 0:14
Footpod (uncalibrated) 3635 2.50% (132.2 Ft/Mile, 25.0 m/Km) 3.83% (202.5 Ft/Mile, 38.3 m/Km) 4.58% (241.8 Ft/Mile, 45.8 m/Km) 0:25 0:15
Polar RC3 GPS 1433 1.65% (86.9 Ft/Mile, 16.5 m/Km) 4.62% (244.2 Ft/Mile, 46.2 m/Km) 4.91% (259.2 Ft/Mile, 49.1 m/Km) 0:27 0:16
TomTom GPS Sport Watch (provisional) 373 3.57% (188.4 Ft/Mile, 35.7 m/Km) 3.99% (210.7 Ft/Mile, 39.9 m/Km) 5.36% (282.8 Ft/Mile, 53.6 m/Km) 0:29 0:18
Garmin 10 1042 3.89% (205.4 Ft/Mile, 38.9 m/Km) 4.37% (231.0 Ft/Mile, 43.7 m/Km) 5.86% (309.2 Ft/Mile, 58.6 m/Km) 0:32 0:19
Garmin 620 2145 3.38% (178.3 Ft/Mile, 33.8 m/Km) 5.12% (270.4 Ft/Mile, 51.2 m/Km) 6.13% (323.9 Ft/Mile, 61.3 m/Km) 0:33 0:20
Garmin Fenix 2 1915 2.05% (108.4 Ft/Mile, 20.5 m/Km) 5.89% (310.8 Ft/Mile, 58.9 m/Km) 6.23% (329.1 Ft/Mile, 62.3 m/Km) 0:34 0:21