7 lines (6 with data), 248 Bytes

f052a 0 128 0 10:15:00 14/09/1987
# Start time=10:15
# First beat=10:15:00.164
# <age-range>: 60-64, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.562,  <RR-high-limit(sec)>: 1.085
# Note: reel-to-reel recording, not flutter-compensated