differential refraction with respect to 5000Ang re-calculated according to Fillipenko 1982, PASP 94, 715 x=sec(z) 3000 3500 4000 4500 5000 5500 6000 6500 7000 7500 8000 8500 9000 9500 1000 x= 1.00 0.00 0.00 0.00 0.00 -0.00 -0.00 -0.00 -0.00 -0.00 -0.00 -0.00 -0.00 -0.00 -0.00 -0.00 x= 1.05 0.68 0.38 0.20 0.08 -0.00 -0.06 -0.11 -0.14 -0.17 -0.19 -0.21 -0.23 -0.24 -0.25 -0.26 x= 1.10 0.97 0.55 0.29 0.12 -0.00 -0.09 -0.15 -0.20 -0.24 -0.28 -0.30 -0.32 -0.34 -0.36 -0.37 x= 1.15 1.20 0.68 0.36 0.15 -0.00 -0.11 -0.19 -0.25 -0.30 -0.34 -0.37 -0.40 -0.42 -0.44 -0.46 x= 1.20 1.40 0.79 0.42 0.17 -0.00 -0.13 -0.22 -0.29 -0.35 -0.40 -0.44 -0.47 -0.49 -0.52 -0.53 x= 1.25 1.58 0.90 0.48 0.20 -0.00 -0.14 -0.25 -0.33 -0.40 -0.45 -0.49 -0.53 -0.56 -0.58 -0.60 x= 1.30 1.75 0.99 0.53 0.22 -0.00 -0.16 -0.28 -0.37 -0.44 -0.50 -0.55 -0.59 -0.62 -0.65 -0.67 x= 1.35 1.91 1.09 0.58 0.24 -0.00 -0.17 -0.30 -0.40 -0.48 -0.55 -0.60 -0.64 -0.68 -0.71 -0.73 x= 1.40 2.07 1.17 0.62 0.26 -0.00 -0.19 -0.33 -0.44 -0.52 -0.59 -0.65 -0.69 -0.73 -0.76 -0.79 x= 1.45 2.21 1.26 0.67 0.27 -0.00 -0.20 -0.35 -0.47 -0.56 -0.63 -0.69 -0.74 -0.78 -0.82 -0.85 x= 1.50 2.36 1.34 0.71 0.29 -0.00 -0.21 -0.37 -0.50 -0.59 -0.67 -0.74 -0.79 -0.83 -0.87 -0.90 x= 1.55 2.50 1.42 0.75 0.31 -0.00 -0.23 -0.40 -0.53 -0.63 -0.71 -0.78 -0.84 -0.88 -0.92 -0.96 x= 1.60 2.63 1.50 0.79 0.33 -0.00 -0.24 -0.42 -0.56 -0.66 -0.75 -0.82 -0.88 -0.93 -0.97 -1.01 x= 1.65 2.77 1.57 0.83 0.34 -0.00 -0.25 -0.44 -0.58 -0.70 -0.79 -0.86 -0.93 -0.98 -1.02 -1.06 x= 1.70 2.90 1.65 0.87 0.36 -0.00 -0.26 -0.46 -0.61 -0.73 -0.83 -0.91 -0.97 -1.02 -1.07 -1.11 x= 1.75 3.03 1.72 0.91 0.38 -0.00 -0.27 -0.48 -0.64 -0.76 -0.86 -0.95 -1.01 -1.07 -1.12 -1.16 x= 1.80 3.16 1.79 0.95 0.39 -0.00 -0.29 -0.50 -0.67 -0.80 -0.90 -0.99 -1.06 -1.12 -1.16 -1.21 x= 1.85 3.28 1.86 0.99 0.41 -0.00 -0.30 -0.52 -0.69 -0.83 -0.94 -1.03 -1.10 -1.16 -1.21 -1.26 x= 1.90 3.41 1.93 1.03 0.42 -0.00 -0.31 -0.54 -0.72 -0.86 -0.97 -1.06 -1.14 -1.20 -1.26 -1.30 x= 1.95 3.53 2.00 1.06 0.44 -0.00 -0.32 -0.56 -0.74 -0.89 -1.01 -1.10 -1.18 -1.25 -1.30 -1.35 x= 2.00 3.65 2.07 1.10 0.45 -0.00 -0.33 -0.58 -0.77 -0.92 -1.04 -1.14 -1.22 -1.29 -1.35 -1.40 x= 2.10 3.89 2.21 1.17 0.48 -0.00 -0.35 -0.62 -0.82 -0.98 -1.11 -1.22 -1.30 -1.38 -1.44 -1.49 x= 2.20 4.13 2.35 1.24 0.51 -0.00 -0.37 -0.65 -0.87 -1.04 -1.18 -1.29 -1.38 -1.46 -1.53 -1.58 x= 2.30 4.37 2.48 1.32 0.54 -0.00 -0.39 -0.69 -0.92 -1.10 -1.25 -1.36 -1.46 -1.54 -1.61 -1.67 x= 2.40 4.60 2.61 1.39 0.57 -0.00 -0.42 -0.73 -0.97 -1.16 -1.31 -1.44 -1.54 -1.63 -1.70 -1.76 x= 2.50 4.83 2.74 1.45 0.60 -0.00 -0.44 -0.76 -1.02 -1.22 -1.38 -1.51 -1.62 -1.71 -1.78 -1.85 x= 2.60 5.06 2.87 1.52 0.63 -0.00 -0.46 -0.80 -1.07 -1.28 -1.44 -1.58 -1.69 -1.79 -1.87 -1.94 x= 2.70 5.29 3.00 1.59 0.66 -0.00 -0.48 -0.84 -1.11 -1.33 -1.51 -1.65 -1.77 -1.87 -1.95 -2.02 x= 2.80 5.52 3.13 1.66 0.68 -0.00 -0.50 -0.87 -1.16 -1.39 -1.57 -1.72 -1.85 -1.95 -2.04 -2.11 x= 2.90 5.74 3.26 1.73 0.71 -0.00 -0.52 -0.91 -1.21 -1.45 -1.64 -1.79 -1.92 -2.03 -2.12 -2.20 x= 3.00 5.97 3.39 1.80 0.74 -0.00 -0.54 -0.94 -1.26 -1.50 -1.70 -1.86 -2.00 -2.11 -2.20 -2.28 x= 3.10 6.19 3.51 1.86 0.77 -0.00 -0.56 -0.98 -1.30 -1.56 -1.77 -1.93 -2.07 -2.19 -2.28 -2.37 x= 3.20 6.41 3.64 1.93 0.79 -0.00 -0.58 -1.01 -1.35 -1.62 -1.83 -2.00 -2.15 -2.26 -2.37 -2.45 x= 3.30 6.63 3.77 2.00 0.82 -0.00 -0.60 -1.05 -1.40 -1.67 -1.89 -2.07 -2.22 -2.34 -2.45 -2.54 x= 3.40 6.85 3.89 2.06 0.85 -0.00 -0.62 -1.08 -1.44 -1.73 -1.95 -2.14 -2.29 -2.42 -2.53 -2.62 x= 3.50 7.07 4.02 2.13 0.88 -0.00 -0.64 -1.12 -1.49 -1.78 -2.02 -2.21 -2.37 -2.50 -2.61 -2.71 x= 3.60 7.29 4.14 2.20 0.90 -0.00 -0.66 -1.15 -1.54 -1.84 -2.08 -2.28 -2.44 -2.58 -2.69 -2.79 x= 3.70 7.51 4.27 2.26 0.93 -0.00 -0.68 -1.19 -1.58 -1.89 -2.14 -2.35 -2.51 -2.65 -2.77 -2.87 x= 3.80 7.73 4.39 2.33 0.96 -0.00 -0.70 -1.22 -1.63 -1.95 -2.21 -2.41 -2.59 -2.73 -2.85 -2.96 x= 3.90 7.95 4.51 2.39 0.99 -0.00 -0.72 -1.26 -1.68 -2.00 -2.27 -2.48 -2.66 -2.81 -2.93 -3.04 x= 4.00 8.17 4.64 2.46 1.01 -0.00 -0.74 -1.29 -1.72 -2.06 -2.33 -2.55 -2.73 -2.89 -3.01 -3.12 x= 4.10 8.39 4.76 2.52 1.04 -0.00 -0.76 -1.33 -1.77 -2.11 -2.39 -2.62 -2.81 -2.96 -3.09 -3.21 x= 4.20 8.60 4.88 2.59 1.07 -0.00 -0.78 -1.36 -1.81 -2.17 -2.45 -2.69 -2.88 -3.04 -3.17 -3.29 x= 4.30 8.82 5.01 2.66 1.09 -0.00 -0.80 -1.40 -1.86 -2.22 -2.52 -2.75 -2.95 -3.12 -3.25 -3.37 x= 4.40 9.04 5.13 2.72 1.12 -0.00 -0.82 -1.43 -1.90 -2.28 -2.58 -2.82 -3.02 -3.19 -3.33 -3.46 x= 4.50 9.25 5.25 2.79 1.15 -0.00 -0.84 -1.46 -1.95 -2.33 -2.64 -2.89 -3.10 -3.27 -3.41 -3.54 x= 4.60 9.47 5.38 2.85 1.17 -0.00 -0.86 -1.50 -2.00 -2.39 -2.70 -2.96 -3.17 -3.35 -3.49 -3.62 x= 4.70 9.69 5.50 2.92 1.20 -0.00 -0.88 -1.53 -2.04 -2.44 -2.76 -3.02 -3.24 -3.42 -3.57 -3.70 x= 4.80 9.90 5.62 2.98 1.23 -0.00 -0.89 -1.57 -2.09 -2.50 -2.82 -3.09 -3.31 -3.50 -3.65 -3.79 x= 4.90 10.12 5.74 3.05 1.25 -0.00 -0.91 -1.60 -2.13 -2.55 -2.89 -3.16 -3.39 -3.57 -3.73 -3.87 x= 5.00 10.33 5.87 3.11 1.28 -0.00 -0.93 -1.64 -2.18 -2.60 -2.95 -3.23 -3.46 -3.65 -3.81 -3.95