7 lines (6 with data), 248 Bytes

m033a 0 128 0 13:04:00 10/05/1990
# Start time=13:04
# First beat=13:35:53.046
# <age-range>: 65-69, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.468,  <RR-high-limit(sec)>: 0.789
# Note: reel-to-reel recording, not flutter-compensated