Assessing the decorative techniques of two Art Nouveau glass windows by optical coherence tomography (OCT)

Heritage Science

Table 2 Analyses performed on the Dining Room window

Grisaille	Spot	Thickness ± 4 (µm)	Acid attack	Spot	Thickness ± 4 (µm)
Light	2	7	Purple	5	54
Light	3	7	Purple	5	56
Light	4	7	Purple	5	66
Light	14	11	Purple	6	27
Black thick	11	43	Purple	6	30
Black thick	1	43	Purple	6	33
Black thick cracked	13	50	Purple	9	89
Black thick cracked	13	70	Blue	12	60
Black thick cracked	14	52
Black thick cracked	15	51
Black thick cracked	15	83
Black thick cracked	15	62
Black thick cracked	18	54
Black thick cracked	18	71
Black thick cracked	18	153
Black thick cracked	18	85
Black thick cracked	18	192
Average		61			52
Standard deviation		50			21
Minimum		7			27
Maximum		192			89