7 lines (6 with data), 253 Bytes

f004b 0 128 0 12:00:00 02/05/1989
# Start time=12:00
# First beat=12:17:20.648
# <age-range>: 60-64, <sex>: Male, <medication>: Flecainide
# <RR-low-limit(sec)>: 0.617,  <RR-high-limit(sec)>: 1.14
# Note: reel-to-reel recording, not flutter-compensated