Table 1. Summaries of estimated parameters, split according to geographic regions.
| All data combined | Indian Ocean | North Atlantic | East Pacific | West Pacific | Other areas | Unit | |
|---|---|---|---|---|---|---|---|
| Deep daytime NASC (sA–M) | 2508 | 1498 | 2176 | 5085 | 1897 | 2570 | m2 n.mi.−2 |
| Deep daytime SV | −71.4 | −73.6 | −72.0 | −68.3 | −72.6 | −71.3 | dB |
| Deep nighttime NASC (sA–M) | 1455 | 1532 | 1656 | 233 | 958 | 2011 | m2 n.mi.−2 |
| Daytime WMD | 486 | 591 | 484 | 348 | 520 | 478 | m |
| Nighttime WMD | 303 | 470 | 319 | 97 | 259 | 331 | m |
| Migration amplitude | 183 | 120 | 165 | 251 | 261 | 146 | m |
| Migrating proportion (MP) | 0.46 | 0.20 | 0.38 | 0.91 | 0.62 | 0.35 | |
| Net transport (NASC_DVM) | 1156 | 297 | 831 | 4609 | 1174 | 910 | m2 n.mi.−2 |
| Day night pairs | 105 | 12 | 23 | 12 | 22 | 36 |
Only datapoints for which paired observations exist are included in the table. Deep refers to mesopelagic (subscript M), i.e. found in the depth range 200–1000 m. WMD refers to weigthed mean depths 0–1000 m (subscript T), WMD = (Σ (sA–Ti * Di)/Σ sA–T), migration amplitude was calculated as the average day to night difference in WMD. Migrating proportion (MP) was calculated as the ratio between mesopelagic daytime NASC values and mesopelagic nighttime NASC values, corrected for overall NASC changes between day and night (i.e. sA–T Day = sA–T Night after normalisation): DNR = sA–T Day/sA–T Night, MP = 1− ((sA–M Night * DNR)/sA–M Day) , MP > = 0. Net transport was calculated as the average of the product of daytime densities and MP: Net transport = sA–M Day * MP.