7 lines (6 with data), 258 Bytes

m070b 0 128 0 10:30:00 16/06/1991
# Start time=10:30
# First beat=10:42:24.085
# <age-range>: 35-39, <sex>: Male, <medication>: Moricizine
# <RR-low-limit(sec)>: 0.546,  <RR-high-limit(sec)>: 1.039
# Note: recording with a timing signal, flutter-compensated