7 lines (6 with data), 248 Bytes

m217a 0 128 0 15:47:00 17/11/1989
# Start time=15:47
# First beat=15:53:14.960
# <age-range>: 55-59, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.515,  <RR-high-limit(sec)>: 0.976
# Note: reel-to-reel recording, not flutter-compensated