| Description | GNSS SBAS status | 
                                                
                                                    | Notes |  | 
                                                
                                                    | Parameter Name | Data Type | Description | 
                                                
                                                    | Field Length | u8 | 18 | 
                                                
                                                    | Descriptor | u8 | 0x12 | 
                                                
                                                    | Time Of Week | double | GPS Time of week [seconds] | 
                                                
                                                    | Week Number | u16 | GPS Week since 1980 [weeks] | 
                                                
                                                    | Sbas System | u8 enum | SBAS system id | Name | Value | Description | 
|---|
 | UNKNOWN | 0 |  |  | WAAS | 1 |  |  | EGNOS | 2 |  |  | MSAS | 3 |  |  | GAGAN | 4 |  | 
 | 
                                                
                                                    | Sbas Id | u8 | SBAS satellite id. | 
                                                
                                                    | Count | u8 | Number of SBAS corrections | 
                                                
                                                    | Sbas Status | u8 bitfield | Status of the SBAS service | Name | Bit(s) | Description | 
|---|
 | range_available | 0 |  |  | corrections_available | 1 |  |  | integrity_available | 2 |  |  | test_mode | 3 |  | 
 | 
                                                
                                                    | Valid Flags | u16 bitfield | 
                                                            
                                                                | Name | Bit(s) | Description |  
                                                                | tow | 0 |  |  
                                                                | week_number | 1 |  |  
                                                                | sbas_system | 2 |  |  
                                                                | sbas_id | 3 |  |  
                                                                | count | 4 |  |  
                                                                | sbas_status | 5 |  |  
                                                                | flags | 0-5 |  |  |