Band 2139.0 cm^-1: ν₁ of ¹²C¹⁶O in natural CO - phase alpha

Band 2112.0 cm^-1: ν₁ of ¹²C¹⁷O in natural CO - phase alpha

Band 2088.5 cm^-1: ν₁ of ¹²C¹⁸O in natural CO - phase alpha

Band 2092.5 cm^-1: ν₁ of ¹³C¹⁶O in natural CO - phase alpha

Band 2064.5 cm^-1: ν₁ of ¹³C¹⁷O in natural CO - phase alpha

Band 2039.9 cm^-1: ν₁ of ¹³C¹⁸O in natural CO - phase alpha

Band 2209.0 cm^-1: ν₁ + ν_L,T of ¹²C¹⁶O in natural CO - phase alpha Band 4252.0 cm^-1: 2ν₁ of ¹²C¹⁶O in natural CO - phase alpha Band 4278.7 cm^-1: [ν₁ + ν₁] of ¹²C¹⁶O in natural CO - phase alpha Band 4317.0 cm^-1: 2ν₁ + ν_L,T of ¹²C¹⁶O in natural CO - phase alpha Band 6337.0 cm^-1: 3ν₁ of ¹²C¹⁶O in natural CO - phase alpha Band 6390.0 cm^-1: 3ν₁ + ν_L,T of ¹²C¹⁶O in natural CO - phase alpha

Band 4198.3 cm^-1: 2ν₁ of ¹²C¹⁷O in natural CO - phase alpha Band 6258.0 cm^-1: 3ν₁ of ¹²C¹⁷O in natural CO - phase alpha

Band 4150.8 cm^-1: 2ν₁ of ¹²C¹⁸O in natural CO - phase alpha Band 6188.4 cm^-1: 3ν₁ of ¹²C¹⁸O in natural CO - phase alpha

Band 4158.1 cm^-1: 2ν₁ of ¹³C¹⁶O in natural CO - phase alpha Band 6199.0 cm^-1: 3ν₁ of ¹³C¹⁶O in natural CO - phase alpha

Band 4054.9 cm^-1: 2ν₁ of ¹³C¹⁸O in natural CO - phase alpha

Band 48400.0 cm^-1: a ³Π_r ← X ¹Σ⁺ (0,0) of ¹²C¹⁶O in natural CO - phase alpha Band 50150.0 cm^-1: a ³Π_r ← X ¹Σ⁺ (1,0) of ¹²C¹⁶O in natural CO - phase alpha Band 51870.0 cm^-1: a ³Π_r ← X ¹Σ⁺ (2,0) of ¹²C¹⁶O in natural CO - phase alpha Band 53500.0 cm^-1: a ³Π_r ← X ¹Σ⁺ (3,0) of ¹²C¹⁶O in natural CO - phase alpha Band 55190.0 cm^-1: a ³Π_r ← X ¹Σ⁺ (4,0) of ¹²C¹⁶O in natural CO - phase alpha Band 56630.0 cm^-1: a ³Π_r ← X ¹Σ⁺ (5,0) of ¹²C¹⁶O in natural CO - phase alpha

Band 63690.0 cm^-1: A ¹Π ← X ¹Σ⁺ (0,0) of ¹²C¹⁶O in natural CO - phase alpha Band 63850.0 cm^-1: A ¹Π ← X ¹Σ⁺ (0,0) of ¹²C¹⁶O in natural CO - phase alpha Band 65230.0 cm^-1: A ¹Π ← X ¹Σ⁺ (1,0) of ¹²C¹⁶O in natural CO - phase alpha Band 65360.0 cm^-1: A ¹Π ← X ¹Σ⁺ (1,0) of ¹²C¹⁶O in natural CO - phase alpha Band 66800.0 cm^-1: A ¹Π ← X ¹Σ⁺ (2,0) of ¹²C¹⁶O in natural CO - phase alpha Band 66930.0 cm^-1: A ¹Π ← X ¹Σ⁺ (2,0) of ¹²C¹⁶O in natural CO - phase alpha Band 68490.0 cm^-1: A ¹Π ← X ¹Σ⁺ (3,0) of ¹²C¹⁶O in natural CO - phase alpha Band 70030.0 cm^-1: A ¹Π ← X ¹Σ⁺ (4,0) of ¹²C¹⁶O in natural CO - phase alpha Band 71430.0 cm^-1: A ¹Π ← X ¹Σ⁺ (5,0) of ¹²C¹⁶O in natural CO - phase alpha Band 72670.0 cm^-1: A ¹Π ← X ¹Σ⁺ (6,0) of ¹²C¹⁶O in natural CO - phase alpha Band 73960.0 cm^-1: A ¹Π ← X ¹Σ⁺ (7,0) of ¹²C¹⁶O in natural CO - phase alpha Band 75300.0 cm^-1: A ¹Π ← X ¹Σ⁺ (8,0) of ¹²C¹⁶O in natural CO - phase alpha Band 76330.0 cm^-1: A ¹Π ← X ¹Σ⁺ (9,0) of ¹²C¹⁶O in natural CO - phase alpha Band 77640.0 cm^-1: A ¹Π ← X ¹Σ⁺ (10,0) of ¹²C¹⁶O in natural CO - phase alpha Band 78740.0 cm^-1: A ¹Π ← X ¹Σ⁺ (11,0) of ¹²C¹⁶O in natural CO - phase alpha Band 79990.0 cm^-1: A ¹Π ← X ¹Σ⁺ (12,0) of ¹²C¹⁶O in natural CO - phase alpha

Band 77030.0 cm^-1: d ³Δ ← X ¹Σ⁺ (16,0) of ¹²C¹⁶O in natural CO - phase alpha Band 78555.0 cm^-1: d ³Δ ← X ¹Σ⁺ (18,0) of ¹²C¹⁶O in natural CO - phase alpha Band 79325.0 cm^-1: d ³Δ ← X ¹Σ⁺ (19,0) of ¹²C¹⁶O in natural CO - phase alpha Band 80060.0 cm^-1: d ³Δ ← X ¹Σ⁺ (20,0) of ¹²C¹⁶O in natural CO - phase alpha Band 80745.0 cm^-1: d ³Δ ← X ¹Σ⁺ (21,0) of ¹²C¹⁶O in natural CO - phase alpha Band 81420.0 cm^-1: d ³Δ ← X ¹Σ⁺ (22,0) of ¹²C¹⁶O in natural CO - phase alpha