7 lines (6 with data), 248 Bytes

e256a 0 128 0 12:30:00 06/11/1987
# Start time=12:30
# First beat=12:36:57.015
# <age-range>: 55-59, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.367,  <RR-high-limit(sec)>: 1.109
# Note: reel-to-reel recording, not flutter-compensated