U denotes a significant increase in performance from last year. In the printed publication this is denoted by an up arrow.
D denotes a significant decrease in performance from last year.
In the printed publication this is denoted by a down arrow. N denotes that the Trust did not provide the service during the period in question. In the printed publication this is denoted by a dash. F denotes that the Trust failed to provide data. In the printed publication this is denoted by a dot.