Could anyone diagnose this: P interval 0.088s， within the normal range，QRS interval 0.066s， also within the normal range，T interval is 0.256s, slightly above the 0.25s upper ceiling，P-R interval is 0.22s, slightly more than 0.2 s ， QT interval is 0.494s, slightly more than 0.44s, QTc interval is 0.48s. heartbeat is 54 bpm. The data set is from an eldery who underwent the bypass surgery - a routine checkup. Attached is a diagram in pdf. Thanks.