7 lines (6 with data), 251 Bytes

m071a 0 128 0 9:52:00 07/03/1989
# Start time=09:52
# First beat=09:55:03.406
# <age-range>: 75-79, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.414,  <RR-high-limit(sec)>: 0.656
# Note: recording with a timing signal, flutter-compensated