7 lines (6 with data), 253 Bytes

m020a 0 128 0 16:19:00 08/01/1990
# Start time=16:19
# First beat=16:27:26.968
# <age-range>: 40-44, <sex>: Female, <medication>: None
# <RR-low-limit(sec)>: 0.578,  <RR-high-limit(sec)>: 1.14
# Note: recording with a timing signal, flutter-compensated