A comparison of the heart rates of Irwin and Scott
on the first lunar excursion of Apollo 15

              
Heart                  **NOTE Irwin's heart rate while preparing the lunar roving vehicle
Rate                            at 121:30 rose to 167

170 150 130 110 90 70
	119:30          120:30            121:30              122:30            123:30             124:30             125:30
	Lunar Module Pilot Irwin     Time, Hrs:Min
Heart Rate
150 130 110 90 70 50
	119:30         120:30            121:30              122:30             123:30              124:30             125:30
	Commander Scott   Time, Hrs: Min

 

The charts show the differences between Astronaut Irwin's heart rate and Astronaut Scott's heart rate over time during the Apollo 15 lunar excursion.

See Apollo 15 article by Dr. Rowe

Reference for these charts is:
Apollo 15 Mission Report. NASA Manned Spacecraft Center Houston ,Texas 1971 : 10-1-15. NASA msc 05161.