Table 2.
The basic description of the dataset merged from SOO and OMMORV.
| Variables | Description | Unit | class | N of missing |
|---|---|---|---|---|
| Nat | Nation | Character | — | |
| st | Station | Character | — | |
| date_time | Date and Time | POSIXct | 4,150 | |
| lat | Latitude | Degree(°) | Numeric | — |
| long | Longitude | Numeric | — | |
| tm_x | Coordinate x, TM projected long | m | Numeric | — |
| tm_y | Coordinate y, TM projected lat | Numeric | — | |
| depth | Depth | Numeric | 766,492 | |
| wt | Water Temperature | °C | Numeric | 632,880 |
| sal | Salinity | psu | Numeric | 633,813 |
| pH | potential of Hydrogen | — | Numeric | 1,611,517 |
| DO | Dissolved Oxygen | ml/L (NIFS) μmol/kg (JMA) | Numeric | 803,932 |
| PO4 | Phosphate | μmol/L (NIFS, JMA <2010 winter) μmol/kg (JMA ≥ 2010 spring) | Numeric | 1,160,474 |
| NO2 | Nitrite | Numeric | 1,291,329 | |
| NO3 | Nitrate | Numeric | 1,296,471 | |
| SiO4 | Silicate | Numeric | 1,619,079 |
The preprocessed R object name and its description, unit, data type, and number of missing data are specified.