7 lines (6 with data), 250 Bytes

e094a 0 128 0 15:01:00 11/11/1988
# Start time=15:01
# First beat=15:24:53.898
# <age-range>: 45-49, <sex>: Female, <medication>: None
# <RR-low-limit(sec)>: 0.414,  <RR-high-limit(sec)>: 1.117
# Note: reel-to-reel recording, not flutter-compensated