7 lines (6 with data), 248 Bytes

e123a 0 128 0 13:50:00 09/12/1987
# Start time=13:50
# First beat=14:11:57.875
# <age-range>: 55-59, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.625,  <RR-high-limit(sec)>: 1.187
# Note: reel-to-reel recording, not flutter-compensated