7 lines (6 with data), 248 Bytes

e269a 0 128 0 15:54:00 10/11/1987
# Start time=15:54
# First beat=16:17:22.312
# <age-range>: 55-59, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.515,  <RR-high-limit(sec)>: 1.171
# Note: reel-to-reel recording, not flutter-compensated