7 lines (6 with data), 251 Bytes

e153a 0 128 0 9:56:00 25/11/1988
# Start time=09:56
# First beat=09:56:16.812
# <age-range>: 70-74, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.562,  <RR-high-limit(sec)>: 1.187
# Note: recording with a timing signal, flutter-compensated