7 lines (6 with data), 253 Bytes

m017b 0 128 0 8:50:00 25/05/1990
# Start time=08:50
# First beat=09:04:58.820
# <age-range>: 60-64, <sex>: Male, <medication>: Moricizine
# <RR-low-limit(sec)>: 0.531,  <RR-high-limit(sec)>: 1.031
# Note: reel-to-reel recording, not flutter-compensated