7 lines (6 with data), 248 Bytes

f057a 0 128 0 10:42:00 11/12/1987
# Start time=10:42
# First beat=10:42:00.765
# <age-range>: 35-39, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.585,  <RR-high-limit(sec)>: 1.398
# Note: reel-to-reel recording, not flutter-compensated