"O" is a clearance, "X" a failure, "–" a pass, exactly as the rulebook's own example writes it. Places follow TR26.8: the fewest jumps at the height last cleared, then the fewest failures up to and including it.
A vault is a chain of energy conversions through a member that deforms and gives the work back. Everything below is measured from the same integration that drew the vault, and the last line is the audit: the state's own energy change against the work put in minus the losses out.