7 lines (6 with data), 254 Bytes

m056b 0 128 0 10:22:00 10/05/1990
# Start time=10:22
# First beat=10:46:27.726
# <age-range>: 55-59, <sex>: Male, <medication>: Moricizine
# <RR-low-limit(sec)>: 0.695,  <RR-high-limit(sec)>: 1.335
# Note: reel-to-reel recording, not flutter-compensated