7 lines (6 with data), 258 Bytes

m072b 0 128 0 11:36:00 06/05/1991
# Start time=11:36
# First beat=11:41:15.875
# <age-range>: 75-79, <sex>: Male, <medication>: Moricizine
# <RR-low-limit(sec)>: 0.562,  <RR-high-limit(sec)>: 1.078
# Note: recording with a timing signal, flutter-compensated