7 lines (6 with data), 258 Bytes

m040b 0 128 0 10:09:00 15/01/1991
# Start time=10:09
# First beat=10:15:05.046
# <age-range>: 75-79, <sex>: Male, <medication>: Moricizine
# <RR-low-limit(sec)>: 0.585,  <RR-high-limit(sec)>: 1.078
# Note: recording with a timing signal, flutter-compensated