7 lines (6 with data), 246 Bytes

e133a 0 128 0 10:30:00 17/09/1987
# Start time=10:30
# First beat=10:41:53.187
# <age-range>: 45-49, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.5,  <RR-high-limit(sec)>: 0.921
# Note: reel-to-reel recording, not flutter-compensated