7 lines (6 with data), 249 Bytes

m111a 0 128 0 13:20:00 16/10/1990
# Start time=13:20
# First beat=13:20:00.132
# <age-range>: 65-69, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.5,  <RR-high-limit(sec)>: 1.25
# Note: recording with a timing signal, flutter-compensated