7 lines (6 with data), 256 Bytes

e277b 0 128 0 9:10:00 27/02/1988
# Start time=09:10
# First beat=09:13:15.789
# <age-range>: 50-54, <sex>: Male, <medication>: Encainide
# <RR-low-limit(sec)>: 0.632,  <RR-high-limit(sec)>: 1.218
# Note: recording with a timing signal, flutter-compensated