7 lines (6 with data), 252 Bytes

m086a 0 128 0 11:00:00 25/11/1990
# Start time=11:00
# First beat=11:06:41.968
# <age-range>: 60-64, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.617,  <RR-high-limit(sec)>: 1.015
# Note: recording with a timing signal, flutter-compensated