The address from which this log was generated
The hash of the block where this log was in
The block number where this log was in
The 32 byte non-indexed argument of the log
The integer of log index position in the block encoded as hexadecimal. null if the log is pending
It is true if log was removed, due to a chain reorganization and false if it's a valid log
An array of zero to four 32 Bytes DATA of indexed log arguments. In Solidity, the first topic is the hash of the signature of the event (e.g. Deposit(address, bytes32, uint256)), except you declare the event with the anonymous specifier
The hash of the transaction from which this log was created from. null if the log is pending
The transactions index position from which this log was created from. null if the log is pending
The return type of transaction receipt logs according to the Ethereum RPC standard.
Link
Ethereum JSON RPC Transaction Receipt Log Object