Table:
text: List of U.S. National Parks by elevation
Highest and lowest points in each US National Park
Highest and lowest points in each US National Park
Rank_ Park Location_ Peak_Name Elevation_ft Minimum_Elevation_ft Vertical_Relief_ft
35 Carlsbad Caverns NM0621 Guadalupe Ridge 6535 3596 2939
36 Kenai Fjords AK0573 unnamed nunatak 6450 0 6450
37 Petrified Forest AZ0621 Pilot Rock 6234 5200 1034
38 Joshua Tree CA0621 Quail Mountain 5813 1780 4033
39 Arches UT0621 Elephant Butte 5653 3960 1693
40 Wind Cave SD0573 Rankin Ridge 5013 3559 1454
41 Kobuk Valley AK0573 Mount Angayukaqsraq 4760 40 4720
42 Shenandoah VA0573 Hawksbill Mountain 4051 530 3521
43 Badlands SD0573 Red Shirt Table 3340 2365 975
44 Redwood CA0573 Coyote Peak 3170 0 3170
45 Teddy Roosevelt ND0573 Peck Hill 2860 1940 920
46 Channel Islands CA0573 El Montañon , Santa Cruz Island 1812 0 1812

Question: What is the mean vertical relief in feet if the rank is greater than 40 and the location is va0573 on the list of US national parks by elevation?

Question: From the list of US national parks by elevation, what is the total number of ranks if the peak name is Red Shirt Table?