| SEQUENCE | The sequence number of the ledger |
| CLOSE_TIME | The timestamp when the ledger was closed (Unix timestamp) |
| HASH | The hash of the ledger header |
| BASE_FEE | The base fee for operations in this ledger (in stroops) |
| BASE_RESERVE | The base reserve for accounts in this ledger (in stroops) |
| ID_POOL | The ID pool for this ledger |
| INFLATION_SEQ | The inflation sequence number for this ledger |
| FEE_POOL | The fee pool for this ledger (in stroops) |
| TOTAL_COINS | The total number of lumens in circulation |
| PREVIOUS_LEDGER_HASH | The hash of the previous ledger |
| EXTENSION | Extension data for the ledger |
| NODE_ID | The ID of the node that closed this ledger |
| SIGNATURE | The signature of the ledger header |
| SKIP_LIST | List of ledger hashes that were skipped |
| BUCKET_LIST_HASH | The hash of the bucket list |
| MAX_TX_SET_SIZE | The maximum size of the transaction set |
| TX_SET_HASH | The hash of the transaction set |
| TX_SET_RESULT_HASH | The hash of the transaction set results |
| UPGRADES | Any protocol upgrades applied in this ledger |
| TOTAL_BYTE_SIZE_OF_BUCKET_LIST | The total byte size of the bucket list |
| PROTOCOL_VERSION | The protocol version used in this ledger |
| TRANSACTION_COUNT | The total number of transactions in this ledger |
| SUCCESSFUL_TRANSACTION_COUNT | The number of successful transactions in this ledger |
| FAILED_TRANSACTION_COUNT | The number of failed transactions in this ledger |
| OPERATION_COUNT | The total number of operations in this ledger |
| EFFECT_COUNT | The total number of effects generated in this ledger |
| CONTRACT_EVENT_COUNT | The number of contract events in this ledger |
| DIAGNOSTIC_EVENT_COUNT | The number of diagnostic events in this ledger |
| METADATA | Additional metadata for the ledger |
| _EXTRA_FIELDS | Additional fields not explicitly defined |
| _CREATED_AT | Timestamp when this record was created |
| _UPDATED_AT | Timestamp when this record was last updated |
