I-2 The optimal polycylindric projection of conformal type (UPC) 635
zone 0
Λ 1 = Λ 2
−3
◦
−2
◦
−1
◦
0
◦
+1
◦
+2
◦
+3
◦
1.0008
1.0006
1.0004
1.0002
1.0000
0.9998
0.9996
Fig. I.4. Airy optimal UPC, WGS 84, zone 0: variation of the radius of the left Tissot circle, the left principal
stretches Λ 1 = Λ 2 = Λ S (Φ 0 = 0, Φ; ˆ
ρ 0 ).
zone ±1
Λ 1 = Λ 2
±3
◦
±4
◦
±5
◦
±6
◦
±7
◦
±8
◦
±9
◦
1.006
1.004
1.002
1.000
0.998
0.996
Fig. I.5. Airy optimal UPC, WGS 84, zone ±1: variation of the radius of the left Tissot circle, the left
principal stretches Λ 1 = Λ 2 = Λ S (Φ 0 = ±6
◦ , Φ; ˆ
ρ 0 ).
zone ±2
Λ 1 = Λ 2
±9
◦
±10
◦
±11
◦
±12
◦
±13
◦
±14
◦
±15
◦
1.010
1.005
1.000
0.995
0.990
Fig. I.6. Airy optimal UPC, WGS 84, zone ±2: variation of the radius of the left Tissot circle, the left
principal stretches Λ 1 = Λ 2 = Λ S (Φ 0 = ±12
◦ , Φ; ˆ
ρ 0 ).