7 lines (6 with data), 248 Bytes

m114a 0 128 0 13:13:00 20/06/1987
# Start time=13:13
# First beat=13:27:00.445
# <age-range>: 65-69, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.507,  <RR-high-limit(sec)>: 1.226
# Note: reel-to-reel recording, not flutter-compensated