7 lines (6 with data), 252 Bytes

e165a 0 128 0 10:11:00 20/02/1988
# Start time=10:11
# First beat=10:15:12.906
# <age-range>: 65-69, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.523,  <RR-high-limit(sec)>: 1.148
# Note: recording with a timing signal, flutter-compensated