7 lines (6 with data), 248 Bytes

m082a 0 128 0 10:13:00 18/11/1990
# Start time=10:13
# First beat=10:13:00.195
# <age-range>: 55-59, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.429,  <RR-high-limit(sec)>: 0.875
# Note: reel-to-reel recording, not flutter-compensated