F3IV

MorganAbt72 lists HR 8071 (HD 200723) and HR 2811 (HD 57749) as F3IV standards.

There are no F3IV standards in JM53, MK73, Cowley74,Houk88, Garcia89, nor
anchor points in Garrison94.

GrayNstars lists HR 1566 as their F3IV CTIO, DSO, and Steward Obs. standard. 

# Weak Standards
HD 31236 = HR 1566 = Cl Melotte 25 126 (J0454+1929)
  F3IV: Cowley76
  F0IV-V: GrayGarrison89
  F1V(n): Gray01 
  F1V: Abt95
  F0: Cannon
  Emailed R. Gray regarding this star -- Nstars webpage lists it 
  as F3IV, but it is F0 or F1 in most other papers. 
  
HD 57749 = HR 2811
  F3IV: Jaschek78(Morgan72),Adams35
  F0: Cannon
  F2III: Houk99,Wilson52

HD 200723 = HR 8071 
  F3IV: Jaschek78(Morgan72(stan.)),Grenier99
  F5III: Harlan74
  F2: Cannon
  F2III: Gray01
  Using revised HIP data, I find that the star is 1.66 mag above MS
  (Mv=1.42), B-V=0.39. Gray disagrees with Morgan on temp and lum subtype.