The relative intensity ratio ⁵D₀ → ⁷F₂/⁵D₀ → ⁷F₁ of the samples.

Sample	5D0 → 7F2/5D0 → 7F1 intensity ratio
a1	1.61
a2	1.77
a3	2.04
a4	2.34
a5	2.28
b1	0.56
b2	0.70
b3	0.78
b4	0.62
b5	0.72