7 lines (6 with data), 248 Bytes

e142a 0 128 0 15:45:00 12/01/1988
# Start time=15:45
# First beat=16:06:51.148
# <age-range>: 45-49, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.515,  <RR-high-limit(sec)>: 1.218
# Note: reel-to-reel recording, not flutter-compensated