7 lines (6 with data), 248 Bytes

m213a 0 128 0 10:10:00 30/12/1989
# Start time=10:10
# First beat=11:02:48.203
# <age-range>: 70-74, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.625,  <RR-high-limit(sec)>: 1.031
# Note: reel-to-reel recording, not flutter-compensated