> ## Documentation Index
> Fetch the complete documentation index at: https://docs.cryosphereinnovation.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Version 4

The version 4 SIMB3 inherits the SIMB3 V3 sensor suite, but replaces the Bruncin temperature string with a custom embedded string. The embedded string has fewer temperature sensors (160 as opposed to 192) but is higher precision (0.01 C instead of 0.125 C).

| Sensor                 | <Tooltip tip="The field is the header of the data column in the deploymentCSV file and the name of the parameter via the API">Field</Tooltip> | Precision | Accuracy    |
| ---------------------- | --------------------------------------------------------------------------------------------------------------------------------------------- | --------- | ----------- |
| Air Temperature        | `air_temp`                                                                                                                                    | 0.1 C     | +/- 0.5 C   |
| Barometric Pressure    | `air_pressure`                                                                                                                                | 0.1 mBar  | +/- 1 mBar  |
| Latitude               | `latitude`                                                                                                                                    | \~ 0.1 m  | 3 m         |
| Longitude              | `longitude`                                                                                                                                   | \~ 0.1 m  | +/- 3 m     |
| Water Temperature      | `water_temp`                                                                                                                                  | 0.01 C    | +/- 0.5 C   |
| Surface Rangefinder    | `surface_distance`                                                                                                                            | 0.01 m    | +/- 0.001 m |
| Underwater Rangefinder | `bottom_distance`                                                                                                                             | 0.01 m    | +/- 0.01 m  |
| Embedded Temp String   | `dtc_values_0-159`                                                                                                                            | 0.01 C    | +/- 0.5 C   |