7 lines (6 with data), 252 Bytes

m094a 0 128 0 16:15:00 06/11/1990
# Start time=16:15
# First beat=17:16:23.117
# <age-range>: 70-74, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.515,  <RR-high-limit(sec)>: 0.867
# Note: recording with a timing signal, flutter-compensated