7 lines (6 with data), 252 Bytes

m015a 0 128 0 11:25:00 02/11/1990
# Start time=11:25
# First beat=11:33:20.046
# <age-range>: 70-74, <sex>: Male, <medication>: None
# <RR-low-limit(sec)>: 0.609,  <RR-high-limit(sec)>: 1.117
# Note: recording with a timing signal, flutter-compensated