7 lines (6 with data), 252 Bytes

f223a 0 128 0 10:38:00 22/12/1987
# Start time=10:38
# First beat=10:41:23.578
# <age-range>: 55-59, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.359,  <RR-high-limit(sec)>: 0.992
# Note: recording with a timing signal, flutter-compensated