7 lines (6 with data), 248 Bytes

m093a 0 128 0 14:21:00 20/07/1989
# Start time=14:21
# First beat=14:22:58.257
# <age-range>: 60-64, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.398,  <RR-high-limit(sec)>: 1.093
# Note: reel-to-reel recording, not flutter-compensated