7 lines (6 with data), 246 Bytes

m017a 0 128 0 11:04:00 13/04/1990
# Start time=11:04
# First beat=11:04:00.476
# <age-range>: 60-64, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.5,  <RR-high-limit(sec)>: 0.976
# Note: reel-to-reel recording, not flutter-compensated