Test wavelength (nm) . | Test field; mN=(°) . | 10 cm actual bearing (°) . | 10 cm magnetic bearing (°) . | 20 cm actual bearing (°) . | 20 cm magnetic bearing (°) . | Shore direction (°) . | 20 cm magnetic bearing rel. to shore (°) . | Home direction (°) . | 20 cm magnetic bearing rel. to home (°) . | Time to score at 20 cm (min:s) . |
---|---|---|---|---|---|---|---|---|---|---|
ESE ponds | ||||||||||
Full | 360 | 39 | 39 | 60 | 60 | 270 | 150 | 103 | 317 | 3:23 |
>500 | 360 | 155 | 155 | 176 | 176 | 270 | 266 | 103 | 73 | 7:16 |
>500 | 180 | 36 | 216 | 180 | 360 | 270 | 90 | 103 | 257 | 12:48 |
>500 | 270 | 283 | 13 | 287 | 17 | 270 | 107 | 103 | 274 | 10:01 |
Full | 270 | 50 | 140 | 234 | 324 | 270 | 54 | 103 | 221 | 10:24 |
Full | 180 | 199 | 19 | 194 | 14 | 270 | 104 | 103 | 271 | 2:40 |
Full | 90 | 49 | 319 | 273 | 183 | 270 | 273 | 103 | 80 | 1:24 |
>500 | 90 | 315 | 225 | 323 | 233 | 270 | 323 | 103 | 130 | 2:29 |
Full | 360 | 175 | 175 | 186 | 186 | 270 | 276 | 103 | 83 | 7:35 |
Full | 90 | 100 | 10 | 51 | 321 | 270 | 51 | 103 | 218 | 5:37 |
>500 | 360 | 254 | 254 | 49 | 49 | 270 | 139 | 103 | 306 | 10:33 |
Full* | 90 | 352 | 262 | 90 | 360 | 360 | 90 | 115 | 245 | 14:41 |
>500* | 90 | 90 | 360 | 75 | 345 | 360 | 75 | 115 | 230 | 11:11 |
>500* | 180 | 175 | 355 | 193 | 13 | 360 | 13 | 115 | 258 | 10:32 |
Full* | 180 | 75 | 255 | 210 | 30 | 360 | 30 | 115 | 275 | 3:58 |
Full* | 270 | 131 | 221 | 131 | 221 | 360 | 221 | 103 | 118 | 3:55 |
>500* | 270 | 312 | 42 | 94 | 184 | 360 | 184 | 103 | 81 | 12:01 |
>500* | 180 | 189 | 9 | 325 | 145 | 360 | 145 | 103 | 42 | 6:45 |
Full* | 180 | 29 | 209 | 32 | 212 | 360 | 212 | 103 | 109 | 7:16 |
Full* | 90 | 245 | 155 | 222 | 132 | 360 | 132 | 103 | 29 | 1:25 |
SSW ponds | ||||||||||
>500 | 360 | 81 | 81 | 31 | 31 | 360 | 31 | 207 | 184 | 1:40 |
Full | 360 | 125 | 125 | 192 | 192 | 360 | 192 | 207 | 345 | 1:09 |
Full | 90 | 182 | 92 | 184 | 94 | 360 | 94 | 207 | 247 | 4:41 |
>500 | 90 | 325 | 235 | 129 | 39 | 360 | 39 | 207 | 192 | 13:10 |
>500 | 180 | 221 | 41 | 219 | 39 | 360 | 39 | 207 | 192 | 2:27 |
Full | 180 | 32 | 212 | 68 | 248 | 360 | 248 | 207 | 41 | 1:29 |
>500 | 270 | 100 | 190 | 146 | 236 | 360 | 236 | 207 | 29 | 1:55 |
Full | 270 | 351 | 81 | 225 | 315 | 360 | 315 | 207 | 108 | 1:52 |
Full | 90 | 165 | 75 | 148 | 58 | 90 | 328 | 207 | 211 | 2:05 |
Full | 270 | 89 | 179 | 303 | 33 | 90 | 303 | 207 | 186 | 1:25 |
>500 | 90 | 299 | 209 | 289 | 199 | 90 | 109 | 207 | 352 | 1:05 |
>500 | 270 | 148 | 238 | 154 | 244 | 90 | 154 | 207 | 37 | 3:50 |
Full | 180 | 85 | 265 | 38 | 218 | 90 | 128 | 207 | 11 | 3:26 |
Full | 360 | 232 | 232 | 225 | 225 | 90 | 135 | 207 | 18 | 1:58 |
>500 | 180 | 266 | 86 | 260 | 80 | 90 | 350 | 207 | 233 | 3:04 |
>500 | 360 | 120 | 120 | 209 | 209 | 90 | 119 | 207 | 2 | 1:30 |
>500 | 270 | 139 | 229 | 112 | 202 | 270 | 292 | 207 | 355 | 3:57 |
>500 | 360 | 49 | 49 | 185 | 185 | 270 | 275 | 207 | 338 | 5:08 |
Full | 360 | 315 | 315 | 275 | 275 | 270 | 5 | 207 | 68 | 3:46 |
Full | 270 | 331 | 61 | 132 | 222 | 270 | 312 | 207 | 15 | 11:14 |
>500* | 90 | 198 | 108 | 342 | 252 | 360 | 252 | 207 | 45 | 6:57 |
Full* | 90 | 125 | 35 | 148 | 58 | 360 | 58 | 207 | 211 | 3:05 |
Full | 180 | 235 | 55 | 241 | 61 | 360 | 61 | 207 | 214 | 10:01 |
>500* | 180 | 105 | 285 | 69 | 249 | 360 | 249 | 207 | 42 | 1:06 |
>500* | 90 | 149 | 59 | 298 | 208 | 270 | 298 | 207 | 1 | 2:40 |
Full* | 90 | 325 | 235 | 331 | 241 | 270 | 331 | 207 | 34 | 1:02 |
Full* | 180 | 75 | 255 | 14 | 194 | 270 | 284 | 207 | 347 | 2:49 |
>500* | 180 | 61 | 241 | 182 | 2 | 270 | 92 | 207 | 155 | 10:57 |
>500* | 360 | 281 | 281 | 169 | 169 | 270 | 259 | 207 | 322 | 5:01 |
Full* | 360 | 271 | 271 | 234 | 234 | 270 | 324 | 207 | 27 | 1:42 |
Test wavelength (nm) . | Test field; mN=(°) . | 10 cm actual bearing (°) . | 10 cm magnetic bearing (°) . | 20 cm actual bearing (°) . | 20 cm magnetic bearing (°) . | Shore direction (°) . | 20 cm magnetic bearing rel. to shore (°) . | Home direction (°) . | 20 cm magnetic bearing rel. to home (°) . | Time to score at 20 cm (min:s) . |
---|---|---|---|---|---|---|---|---|---|---|
ESE ponds | ||||||||||
Full | 360 | 39 | 39 | 60 | 60 | 270 | 150 | 103 | 317 | 3:23 |
>500 | 360 | 155 | 155 | 176 | 176 | 270 | 266 | 103 | 73 | 7:16 |
>500 | 180 | 36 | 216 | 180 | 360 | 270 | 90 | 103 | 257 | 12:48 |
>500 | 270 | 283 | 13 | 287 | 17 | 270 | 107 | 103 | 274 | 10:01 |
Full | 270 | 50 | 140 | 234 | 324 | 270 | 54 | 103 | 221 | 10:24 |
Full | 180 | 199 | 19 | 194 | 14 | 270 | 104 | 103 | 271 | 2:40 |
Full | 90 | 49 | 319 | 273 | 183 | 270 | 273 | 103 | 80 | 1:24 |
>500 | 90 | 315 | 225 | 323 | 233 | 270 | 323 | 103 | 130 | 2:29 |
Full | 360 | 175 | 175 | 186 | 186 | 270 | 276 | 103 | 83 | 7:35 |
Full | 90 | 100 | 10 | 51 | 321 | 270 | 51 | 103 | 218 | 5:37 |
>500 | 360 | 254 | 254 | 49 | 49 | 270 | 139 | 103 | 306 | 10:33 |
Full* | 90 | 352 | 262 | 90 | 360 | 360 | 90 | 115 | 245 | 14:41 |
>500* | 90 | 90 | 360 | 75 | 345 | 360 | 75 | 115 | 230 | 11:11 |
>500* | 180 | 175 | 355 | 193 | 13 | 360 | 13 | 115 | 258 | 10:32 |
Full* | 180 | 75 | 255 | 210 | 30 | 360 | 30 | 115 | 275 | 3:58 |
Full* | 270 | 131 | 221 | 131 | 221 | 360 | 221 | 103 | 118 | 3:55 |
>500* | 270 | 312 | 42 | 94 | 184 | 360 | 184 | 103 | 81 | 12:01 |
>500* | 180 | 189 | 9 | 325 | 145 | 360 | 145 | 103 | 42 | 6:45 |
Full* | 180 | 29 | 209 | 32 | 212 | 360 | 212 | 103 | 109 | 7:16 |
Full* | 90 | 245 | 155 | 222 | 132 | 360 | 132 | 103 | 29 | 1:25 |
SSW ponds | ||||||||||
>500 | 360 | 81 | 81 | 31 | 31 | 360 | 31 | 207 | 184 | 1:40 |
Full | 360 | 125 | 125 | 192 | 192 | 360 | 192 | 207 | 345 | 1:09 |
Full | 90 | 182 | 92 | 184 | 94 | 360 | 94 | 207 | 247 | 4:41 |
>500 | 90 | 325 | 235 | 129 | 39 | 360 | 39 | 207 | 192 | 13:10 |
>500 | 180 | 221 | 41 | 219 | 39 | 360 | 39 | 207 | 192 | 2:27 |
Full | 180 | 32 | 212 | 68 | 248 | 360 | 248 | 207 | 41 | 1:29 |
>500 | 270 | 100 | 190 | 146 | 236 | 360 | 236 | 207 | 29 | 1:55 |
Full | 270 | 351 | 81 | 225 | 315 | 360 | 315 | 207 | 108 | 1:52 |
Full | 90 | 165 | 75 | 148 | 58 | 90 | 328 | 207 | 211 | 2:05 |
Full | 270 | 89 | 179 | 303 | 33 | 90 | 303 | 207 | 186 | 1:25 |
>500 | 90 | 299 | 209 | 289 | 199 | 90 | 109 | 207 | 352 | 1:05 |
>500 | 270 | 148 | 238 | 154 | 244 | 90 | 154 | 207 | 37 | 3:50 |
Full | 180 | 85 | 265 | 38 | 218 | 90 | 128 | 207 | 11 | 3:26 |
Full | 360 | 232 | 232 | 225 | 225 | 90 | 135 | 207 | 18 | 1:58 |
>500 | 180 | 266 | 86 | 260 | 80 | 90 | 350 | 207 | 233 | 3:04 |
>500 | 360 | 120 | 120 | 209 | 209 | 90 | 119 | 207 | 2 | 1:30 |
>500 | 270 | 139 | 229 | 112 | 202 | 270 | 292 | 207 | 355 | 3:57 |
>500 | 360 | 49 | 49 | 185 | 185 | 270 | 275 | 207 | 338 | 5:08 |
Full | 360 | 315 | 315 | 275 | 275 | 270 | 5 | 207 | 68 | 3:46 |
Full | 270 | 331 | 61 | 132 | 222 | 270 | 312 | 207 | 15 | 11:14 |
>500* | 90 | 198 | 108 | 342 | 252 | 360 | 252 | 207 | 45 | 6:57 |
Full* | 90 | 125 | 35 | 148 | 58 | 360 | 58 | 207 | 211 | 3:05 |
Full | 180 | 235 | 55 | 241 | 61 | 360 | 61 | 207 | 214 | 10:01 |
>500* | 180 | 105 | 285 | 69 | 249 | 360 | 249 | 207 | 42 | 1:06 |
>500* | 90 | 149 | 59 | 298 | 208 | 270 | 298 | 207 | 1 | 2:40 |
Full* | 90 | 325 | 235 | 331 | 241 | 270 | 331 | 207 | 34 | 1:02 |
Full* | 180 | 75 | 255 | 14 | 194 | 270 | 284 | 207 | 347 | 2:49 |
>500* | 180 | 61 | 241 | 182 | 2 | 270 | 92 | 207 | 155 | 10:57 |
>500* | 360 | 281 | 281 | 169 | 169 | 270 | 259 | 207 | 322 | 5:01 |
Full* | 360 | 271 | 271 | 234 | 234 | 270 | 324 | 207 | 27 | 1:42 |
Newts from which natural remanent magnetism (NRM) measurements were obtained; see Table 2. Full,full-spectrum light; >500, wavelengths >500 nm; mN, magnetic north.