qwat.qwat_sys contains 30 columns - click on heading to sort:

Table	Column	Type	Size	Nulls	Auto	Default	Comments
logged_actions	event_id	bigserial	19		√	nextval('qwat_sys.logged_actions_event_id_seq'::regclass)	Unique identifier for each auditable event
logged_actions	statement_only	bool	1				't' if audit event is from an FOR EACH STATEMENT trigger, 'f' for FOR EACH ROW
settings	v_not_null	bool	1	√		true
settings	v_max	float8	17,17	√		null
settings	v_min	float8	17,17	√		null
logged_actions	changed_fields	hstore	2147483647	√		null	New values of fields changed by UPDATE. Null except for row-level UPDATE events.
logged_actions	row_data	hstore	2147483647	√		null	Record value. Null for statement-level trigger. For INSERT this is the new tuple. For DELETE and UPDATE it is the old tuple.
logged_actions	client_addr	inet	2147483647	√		null	IP address of client that issued query. Null for unix domain socket.
logged_actions	client_port	int4	10	√		null	Remote peer IP port address of client that issued query. Undefined for unix socket.
logged_actions	transaction_id	int8	19	√		null	Identifier of transaction that made the change. May wrap, but unique paired with action_tstamp_tx.
logged_actions	relid	oid	10				Table OID. Changes with drop/create. Get with 'tablename'::regclass
settings	type	regtype	2147483647	√		null
settings	id	serial	10		√	nextval('qwat_sys.settings_id_seq'::regclass)
versions	id	serial	10		√	nextval('qwat_sys.versions_id_seq'::regclass)
logged_actions	action	text	2147483647				Action type; I = insert, D = delete, U = update, T = truncate
logged_actions	application_name	text	2147483647	√		null	Application name set when this audit event occurred. Can be changed in-session by client.
logged_actions	client_query	text	2147483647				Top-level query that caused this auditable event. May be more than one statement.
settings	description	text	2147483647	√		null
logged_relations	relation_name	text	2147483647				Relation (table or view) name (with schema if needed)
logged_actions	schema_name	text	2147483647				Database schema audited table for this event is in
logged_actions	session_user_name	text	2147483647	√		null	Login / session user whose statement caused the audited event
logged_actions	table_name	text	2147483647				Non-schema-qualified table name of table event occured in
logged_relations	uid_column	text	2147483647				Name of a column that is used to uniquely identify a row in the relation
settings	value	text	2147483647	√		null
logged_actions	action_tstamp_clk	timestamptz	35,6				Wall clock time at which audited event's trigger call occurred
logged_actions	action_tstamp_stm	timestamptz	35,6				Statement start timestamp for tx in which audited event occurred
logged_actions	action_tstamp_tx	timestamptz	35,6				Transaction start timestamp for tx in which audited event occurred
settings	name	varchar	30	√		null
versions	module	varchar	2147483647	√		null
versions	version	varchar	2147483647	√		null