F6IV

JM53 lists HR 544 (alf Tri), 40 Leo, and tet UMa as their F6IV
standards.

Cowley74 lists alf Tri and 40 Leo as their F6IV standards. 

MorganAbt72 lists HR 544 (alf Tri) and HR 4843 as their F6IV standards.

Morgan71,MK73,Houk88, & GrayNstars (Steward Obs,DSO) list alf Tri as their F6IV standard. 

# Primary Standard
HD 11443 = HR 544 = Alf Tri (J0153+2934)
  F6IV: JM53,MK73,Cowley74(stan),Gray01,Gray03
  F7IVab: Barry70(uv metals weak)
  F5III: MK43,Abt09
  F5IV: Roman52(lines weak)
  F6: Fekel03
  MK73 considers it a dagger standard, but it was F5III in MK43. 
  Listed as F6IV standard by JM53,MK73,Morgan71,MorganAbt72,Cowley74,GrayNStars,Houk

# Secondary Standard 
HD 89449 = HR 4054 = 40 Leo (J1019+1928)
  F6IV: Jaschek78(JM53),Jaschek64(most),Cowley74(stan)
  F6IV-V: Gray03
  F6IVb: Barry70(uv metals strong)
  F6V: Roman50
  F5: Cannon
  Very good agreement on F6 subtype. 
  Using revised HIP data, I find the star to be 0.36 mag above
  MS (Mv=3.13), B-V = 0.452 mag. Adequate "F6IV" standard. 
  Only listed as a standard in JM53. 

# Weak standard
HD 82328 = HR 3775 = HIP 46853 = tet UMa 
  F6IV: JM53,Slettebak55,Jaschek64(most),Abt81
  F6III-IV: Keenan53
  F6III: MK43
  F7V: Abt09
  F7IVab: Barry70
  F5.5IV-V: Gray03
  F8p: Cannon
  Not great agreement. F5.5-F7 and III through IV in the post-JM53 literature. 
  B-V=0.475, Mv=2.52, dMv = -1.12. So it appears to be evolved.