Ratios

Loss Ratios

R.A.F. to Luftwaffe loss ratios
Date R.A.F. fighters:Luftwaffe fighters R.A.F. fighters:Luftwaffe bombers R.A.F. fighters:Luftwaffe aircraft R.A.F. pilots:Luftwaffe crew
Totals 1:0.60 (1.65:1) 1:0.56 (1.78:1) 1:1.17 (0.86:1) 1:1.79 (0.56:1)
1940-07-13 1:0.75 (1.33:1) 1:0.88 (1.14:1) 1:1.62 (0.62:1) 1:1.62 (0.62:1)
1940-07-14 1:1 (1:1) 1:1.50 (0.67:1) 1:2.50 (0.40:1) 1:2.50 (0.40:1)
1940-07-15 1:0 (0:1) 1:2 (0.50:1) 1:2 (0.50:1) 1:2 (0.50:1)
1940-07-16 0:0 (0:0) 0:2 (2:0) 0:2 (2:0) 0:2 (2:0)
1940-07-17 3:0 (0:3) 1:1 (1:1) 1:1 (1:1) 1:1 (1:1)
1940-07-18 1:0.25 (4:1) 1:2 (0.50:1) 1:2.25 (0.44:1) 1:2.25 (0.44:1)
1940-07-19 1:0.29 (3.50:1) 1:0.21 (4.67:1) 1:0.50 (2:1) 1:0.50 (2:1)
1940-07-20 1:0.50 (2:1) 1:0.70 (1.43:1) 1:1.20 (0.83:1) 1:1.20 (0.83:1)
1940-07-21 1:1.33 (0.75:1) 1:0.67 (1.50:1) 1:2 (0.50:1) 1:2 (0.50:1)
1940-07-22 1:0 (0:1) 1:1 (1:1) 1:1 (1:1) 1:1 (1:1)
1940-07-23 2:0 (0:2) 1:2 (0.50:1) 1:2 (0.50:1) 1:2 (0.50:1)
1940-07-24 1:2.67 (0.38:1) 1:1.33 (0.75:1) 1:4 (0.25:1) 1:4 (0.25:1)
1940-07-25 1:0.41 (2.43:1) 1:0.53 (1.89:1) 1:0.94 (1.06:1) 1:0.94 (1.06:1)
1940-07-26 1:0.50 (2:1) 1:1 (1:1) 1:1.50 (0.67:1) 1:1.50 (0.67:1)
1940-07-27 1:0.50 (2:1) 1:2 (0.50:1) 1:2.50 (0.40:1) 1:2.50 (0.40:1)
1940-07-28 1:0.57 (1.75:1) 1:0.57 (1.75:1) 1:1.14 (0.88:1) 1:1.14 (0.88:1)
1940-07-29 1:0.29 (3.50:1) 1:0.86 (1.17:1) 1:1.14 (0.88:1) 1:1.14 (0.88:1)
1940-07-30 0:1 (1:0) 0:5 (5:0) 0:6 (6:0) 0:6 (6:0)
1940-07-31 5:0 (0:5) 1:0.40 (2.50:1) 1:0.40 (2.50:1) 1:0.40 (2.50:1)
1940-08-01 4:0 (0:4) 1:0.75 (1.33:1) 1:0.75 (1.33:1) 1:0.75 (1.33:1)
1940-08-02 1:0 (0:1) 1:4 (0.25:1) 1:4 (0.25:1) 1:4 (0.25:1)
1940-08-03 0:0 (0:0) 0:1 (1:0) 0:1 (1:0) 0:1 (1:0)
1940-08-04 2:0 (0:2) 2:0 (0:2) 2:0 (0:2) 2:0 (0:2)
1940-08-05 1:1.33 (0.75:1) 3:0 (0:3) 1:1.33 (0.75:1) 1:1.33 (0.75:1)
1940-08-06 0:0 (0:0) 0:1 (1:0) 0:1 (1:0) 0:1 (1:0)
1940-08-07 1:0 (0:1) 1:0 (0:1) 1:0 (0:1) 1:0 (0:1)
1940-08-08 1:0.79 (1.27:1) 1:0.71 (1.40:1) 1:1.50 (0.67:1) 1:1.50 (0.67:1)
1940-08-09 0:0 (0:0) 0:3 (3:0) 0:3 (3:0) 0:3 (3:0)
1940-08-10 0:0 (0:0) 0:0 (0:0) 0:0 (0:0) 0:0 (0:0)
1940-08-11 1:0.74 (1.34:1) 1:0.33 (3.07:1) 1:1.07 (0.93:1) 1:1.07 (0.93:1)
1940-08-12 1:0.67 (1.50:1) 1:0.50 (2:1) 1:1.17 (0.86:1) 1:1.17 (0.86:1)
1940-08-13 1:1.17 (0.85:1) 1:1.45 (0.69:1) 1:2.62 (0.38:1) 1:2.62 (0.38:1)
1940-08-14 1:0.45 (2.22:1) 1:0.55 (1.82:1) 1:1 (1:1) 1:1 (1:1)
1940-08-15 1:0.71 (1.40:1) 1:0.78 (1.28:1) 1:1.49 (0.67:1) 1:1.49 (0.67:1)
1940-08-16 1:0.76 (1.31:1) 1:1 (1:1) 1:1.76 (0.57:1) 1:1.76 (0.57:1)
1940-08-17 0:0 (0:0) 0:0 (0:0) 0:0 (0:0) 0:0 (0:0)
1940-08-18 1:0.64 (1.56:1) 1:0.82 (1.22:1) 1:1.46 (0.69:1) 1:1.46 (0.69:1)
1940-08-19 7:0 (0:7) 1:0.57 (1.75:1) 1:0.57 (1.75:1) 1:0.57 (1.75:1)
1940-08-20 1:0.67 (1.50:1) 1:1.33 (0.75:1) 1:2 (0.50:1) 1:2 (0.50:1)
1940-08-21 12:0 (0:12) 1:1.08 (0.92:1) 1:1.08 (0.92:1) 1:1.08 (0.92:1)
1940-08-22 10:0 (0:10) 1:0.20 (5:1) 1:0.20 (5:1) 1:0.20 (5:1)
1940-08-23 1:0 (0:1) 1:2 (0.50:1) 1:2 (0.50:1) 1:2 (0.50:1)
1940-08-24 1:0.47 (2.12:1) 1:0.33 (3:1) 1:0.81 (1.24:1) 1:0.81 (1.24:1)
1940-08-25 1:0.57 (1.75:1) 1:0.05 (21:1) 1:0.62 (1.62:1) 1:0.62 (1.62:1)
1940-08-26 1:0.45 (2.20:1) 1:0.41 (2.44:1) 1:0.86 (1.16:1) 1:0.86 (1.16:1)
1940-08-27 4:0 (0:4) 1:0.75 (1.33:1) 1:0.75 (1.33:1) 1:0.75 (1.33:1)
1940-08-28 1:0.50 (2:1) 1:0.07 (14:1) 1:0.57 (1.75:1) 1:0.57 (1.75:1)
1940-08-29 1:0.62 (1.62:1) 13:0 (0:13) 1:0.62 (1.62:1) 1:0.62 (1.62:1)
1940-08-30 1:0.42 (2.35:1) 1:0.33 (3.08:1) 1:0.75 (1.33:1) 1:0.75 (1.33:1)
1940-08-31 1:0.64 (1.57:1) 1:0.24 (4.23:1) 1:0.87 (1.15:1) 1:0.87 (1.15:1)
1940-09-01 1:0.60 (1.67:1) 1:0.32 (3.12:1) 1:0.92 (1.09:1) 1:0.92 (1.09:1)
1940-09-02 1:1.22 (0.82:1) 1:0.22 (4.60:1) 1:1.43 (0.70:1) 1:1.43 (0.70:1)
1940-09-03 1:0.62 (1.62:1) 1:0.04 (26:1) 1:0.65 (1.53:1) 1:0.65 (1.53:1)

Claim Ratios

The source I've used doesn't contain claim data from Luftwaffe bomber units, only fighters, but all R.A.F. losses are recorded so comparisons between R.A.F. and Luffwaffe claims aren't like for like. That said, it's still valid for trend analysis within those data sets so I've included them here for that reason.

R.A.F. and Luftwaffe claim ratios
Date Losses:Claims Luftwaffe losses:R.A.F. claims RAF losses:Luftwaffe claims Spitfire Losses:Luftwaffe Spitfire claims Hurricane Losses:Luftwaffe Hurricane claims
Totals 1:1.65 (0.61:1) 1:1.91 (0.52:1) 1:1.34 (0.75:1) 1:2.11 (0.47:1) 1:0.86 (1.17:1)
1940-07-13 1:1.67 (0.60:1) 1:2.08 (0.48:1) 1:1 (1:1) 1:2 (0.50:1) 1:0.86 (1.17:1)
1940-07-14 1:1.71 (0.58:1) 1:1.60 (0.62:1) 1:2 (0.50:1) 0:0 (0:0) 1:2 (0.50:1)
1940-07-15 1:1.33 (0.75:1) 1:2 (0.50:1) 1:0 (0:1) 0:0 (0:0) 1:0 (0:1)
1940-07-16 1:1.50 (0.67:1) 1:1.50 (0.67:1) 0:0 (0:0) 0:0 (0:0) 0:0 (0:0)
1940-07-17 1:0.17 (6:1) 1:0.33 (3:1) 3:0 (0:3) 3:0 (0:3) 0:0 (0:0)
1940-07-18 1:0.31 (3.25:1) 1:0.22 (4.50:1) 1:0.50 (2:1) 1:0.33 (3:1) 1:0 (0:1)
1940-07-19 1:2 (0.50:1) 1:2.86 (0.35:1) 1:1.57 (0.64:1) 1:2.50 (0.40:1) 1:1.20 (0.83:1)
1940-07-20 1:1.05 (0.96:1) 1:1.42 (0.71:1) 1:0.60 (1.67:1) 1:0.67 (1.50:1) 1:0.67 (1.50:1)
1940-07-21 1:0.78 (1.29:1) 1:0.83 (1.20:1) 1:0.67 (1.50:1) 0:0 (0:0) 1:0.67 (1.50:1)
1940-07-22 1:1.50 (0.67:1) 1:3 (0.33:1) 1:0 (0:1) 0:0 (0:0) 0:0 (0:0)
1940-07-23 1:0.17 (6:1) 1:0.25 (4:1) 2:0 (0:2) 2:0 (0:2) 0:0 (0:0)
1940-07-24 1:1.73 (0.58:1) 1:1.75 (0.57:1) 1:1.67 (0.60:1) 1:1.67 (0.60:1) 0:0 (0:0)
1940-07-25 1:1.36 (0.73:1) 1:2 (0.50:1) 1:0.76 (1.31:1) 1:0.92 (1.08:1) 4:0 (0:4)
1940-07-26 1:1.20 (0.83:1) 1:1.67 (0.60:1) 1:0.50 (2:1) 0:0 (0:0) 1:0.50 (2:1)
1940-07-27 1:1.14 (0.88:1) 1:1 (1:1) 1:1.50 (0.67:1) 1:1 (1:1) 1:2 (0.50:1)
1940-07-28 1:0.80 (1.25:1) 1:0.75 (1.33:1) 1:0.86 (1.17:1) 1:0.83 (1.20:1) 1:1 (1:1)
1940-07-29 1:0.97 (1.03:1) 1:0.81 (1.23:1) 1:1.14 (0.88:1) 1:1.50 (0.67:1) 1:0.67 (1.50:1)
1940-07-30 1:0.33 (3:1) 1:0.33 (3:1) 0:0 (0:0) 0:0 (0:0) 0:0 (0:0)
1940-07-31 1:1 (1:1) 1:1 (1:1) 1:1 (1:1) 1:1.67 (0.60:1) 2:0 (0:2)
1940-08-01 1:0.14 (7:1) 1:0.33 (3:1) 4:0 (0:4) 0:0 (0:0) 1:0 (0:1)
1940-08-02 5:0 (0:5) 4:0 (0:4) 1:0 (0:1) 1:0 (0:1) 0:0 (0:0)
1940-08-03 1:0 (0:1) 1:0 (0:1) 0:0 (0:0) 0:0 (0:0) 0:0 (0:0)
1940-08-04 2:0 (0:2) 0:0 (0:0) 2:0 (0:2) 1:0 (0:1) 0:0 (0:0)
1940-08-05 1:2 (0.50:1) 1:2 (0.50:1) 1:2 (0.50:1) 1:1.67 (0.60:1) 0:0 (0:0)
1940-08-06 1:2 (0.50:1) 1:2 (0.50:1) 0:0 (0:0) 0:0 (0:0) 0:0 (0:0)
1940-08-07 1:0 (0:1) 0:0 (0:0) 1:0 (0:1) 0:0 (0:0) 0:0 (0:0)
1940-08-08 1:1.34 (0.74:1) 1:1.31 (0.76:1) 1:1.39 (0.72:1) 1:2 (0.50:1) 1:1.06 (0.94:1)
1940-08-09 1:0.67 (1.50:1) 1:0.67 (1.50:1) 0:0 (0:0) 0:0 (0:0) 0:0 (0:0)
1940-08-10 0:0 (0:0) 0:0 (0:0) 0:0 (0:0) 0:0 (0:0) 0:0 (0:0)
1940-08-11 1:1.64 (0.61:1) 1:1.87 (0.53:1) 1:1.40 (0.72:1) 1:4.22 (0.24:1) 1:0.56 (1.79:1)
1940-08-12 1:1.73 (0.58:1) 1:2.52 (0.40:1) 1:0.81 (1.24:1) 1:1.06 (0.94:1) 1:0.47 (2.11:1)
1940-08-13 1:1.35 (0.74:1) 1:1.47 (0.68:1) 1:1.03 (0.97:1) 1:2.29 (0.44:1) 1:0.64 (1.57:1)
1940-08-14 1:1.07 (0.93:1) 1:1.35 (0.74:1) 1:0.80 (1.25:1) 1:1.43 (0.70:1) 1:0.60 (1.67:1)
1940-08-15 1:2.16 (0.46:1) 1:2.44 (0.41:1) 1:1.75 (0.57:1) 1:2.89 (0.35:1) 1:1.21 (0.83:1)
1940-08-16 1:1.59 (0.63:1) 1:1.78 (0.56:1) 1:1.24 (0.81:1) 1:1.50 (0.67:1) 1:0.94 (1.07:1)
1940-08-17 0:0 (0:0) 0:0 (0:0) 0:0 (0:0) 0:0 (0:0) 0:0 (0:0)
1940-08-18 1:1.75 (0.57:1) 1:1.96 (0.51:1) 1:1.46 (0.69:1) 1:2.89 (0.35:1) 1:0.81 (1.24:1)
1940-08-19 1:0.55 (1.83:1) 1:1.50 (0.67:1) 7:0 (0:7) 6:0 (0:6) 1:0 (0:1)
1940-08-20 1:1.67 (0.60:1) 1:1.83 (0.55:1) 1:1.33 (0.75:1) 1:2 (0.50:1) 1:0 (0:1)
1940-08-21 1:0.64 (1.56:1) 1:1.15 (0.87:1) 1:0.08 (12:1) 1:0.17 (6:1) 4:0 (0:4)
1940-08-22 1:1.50 (0.67:1) 1:5 (0.20:1) 1:0.80 (1.25:1) 1:1 (1:1) 2:0 (0:2)
1940-08-23 1:2.67 (0.38:1) 1:1 (1:1) 1:6 (0.17:1) 0:0 (0:0) 1:0 (0:1)
1940-08-24 1:1.80 (0.56:1) 1:2.31 (0.43:1) 1:1.39 (0.72:1) 1:2.91 (0.34:1) 1:0.93 (1.08:1)
1940-08-25 1:3.15 (0.32:1) 1:4.92 (0.20:1) 1:2.05 (0.49:1) 1:2 (0.50:1) 1:2.71 (0.37:1)
1940-08-26 1:1.43 (0.70:1) 1:1.71 (0.58:1) 1:1.18 (0.85:1) 1:2.64 (0.38:1) 1:0.46 (2.17:1)
1940-08-27 1:0.57 (1.75:1) 1:1.33 (0.75:1) 4:0 (0:4) 1:0 (0:1) 3:0 (0:3)
1940-08-28 1:1.66 (0.60:1) 1:2.25 (0.44:1) 1:1.32 (0.76:1) 1:1.71 (0.58:1) 1:1.64 (0.61:1)
1940-08-29 1:1.81 (0.55:1) 1:2.88 (0.35:1) 1:1.15 (0.87:1) 1:2.17 (0.46:1) 1:0.29 (3.50:1)
1940-08-30 1:2.19 (0.46:1) 1:2.97 (0.34:1) 1:1.60 (0.62:1) 1:1.61 (0.62:1) 1:1.55 (0.65:1)
1940-08-31 1:2.06 (0.49:1) 1:2.44 (0.41:1) 1:1.73 (0.58:1) 1:2.82 (0.35:1) 1:1.18 (0.84:1)
1940-09-01 1:1.69 (0.59:1) 1:1.70 (0.59:1) 1:1.68 (0.60:1) 1:2.70 (0.37:1) 1:0.93 (1.07:1)
1940-09-02 1:2.25 (0.44:1) 1:1.85 (0.54:1) 1:2.83 (0.35:1) 1:8.33 (0.12:1) 1:0.65 (1.55:1)
1940-09-03 1:1.58 (0.63:1) 1:1.94 (0.52:1) 1:1.35 (0.74:1) 1:7 (0.14:1) 1:0.37 (2.71:1)

The claim ratios for both sides seem to remain roughly similar along the time line, over claiming is the norm and by roughly the same amount.

R.A.F. claim to kill ratio

R.A.F. claim to kill ratio

Spitfire Inflation

What does stand out is the Luftwaffe's "Spitfire inflation". I don't have the claims from the bomber units and haven't broken down the R.A.F. losses from fighters and bombers so I can't rule out that the Luftwaffe fighters were disproportionately engaging Spitfires but for each Spitfire lost the Luftwaffe claimed 2.11 whilst for each Hurricane lost 0.86 were claimed. This is a pretty significant difference and indicates that the Luftwaffe were identifying Hurricanes as Spitfires to a reasonable degree.