7 lines (6 with data), 248 Bytes

f158a 0 128 0 16:00:00 04/11/1987
# Start time=16:00
# First beat=16:00:01.070
# <age-range>: 50-54, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.593,  <RR-high-limit(sec)>: 1.585
# Note: reel-to-reel recording, not flutter-compensated