7 lines (6 with data), 250 Bytes

e175a 0 128 0 9:15:00 15/08/1988
# Start time=09:15
# First beat=09:23:22.085
# <age-range>: 70-74, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.71,  <RR-high-limit(sec)>: 1.296
# Note: recording with a timing signal, flutter-compensated