7 lines (6 with data), 247 Bytes

e037a 0 128 0 10:00:00 11/10/1987
# Start time=10:00
# First beat=10:03:16.726
# <age-range>: 50-54, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.46,  <RR-high-limit(sec)>: 1.148
# Note: reel-to-reel recording, not flutter-compensated