Table 4.

Microanalysis (EDX) results. Comparison of elemental composition of parchment samples. Data are reported as weight %. One-way ANOVA/Tukey’s t test comparisons are reported; statistically significant differences (p < 0.001) in elemental composition is marked with different letters (A, B, C). Mean values of 60 measurements ± standard deviation are reported

Element	Sample	Mean	Standard deviation	Group
Al	D_f	0.06	0.10	B
Al	D_h	0.35	0.41	B
Al	H_f	0.25	0.24	B
Al	H_h	1.38	0.60	A
C	D_f	56.06	3.14	A
C	D_h	57.93	5.03	A
C	H_f	44.67	3.09	B
C	H_h	42.47	5.98	B
Ca	D_f	1.79	0.53	B
Ca	D_h	2.74	1.23	B
Ca	H_f	8.61	3.60	A
Ca	H_h	4.02	2.37	B
Cl	D_f	1.20	0.33	A
Cl	D_h	1.06	0.43	A
Cl	H_f	1.04	0.19	A
Cl	H_h	0.80	0.56	A
Fe	D_f	0.00	0.00	C
Fe	D_h	0.20	0.36	BC
Fe	H_f	0.51	0.58	AB
Fe	H_h	0.69	0.31	A
K	D_f	0.31	0.09	C
K	D_h	0.63	0.21	B
K	H_f	0.48	0.13	BC
K	H_h	0.82	0.27	A
Mg	D_f	0.08	0.11	B
Mg	D_h	0.17	0.16	B
Mg	H_f	0.10	0.15	B
Mg	H_h	0.37	0.24	A
N	D_f	17.89	2.85	A
N	D_h	14.23	3.25	BC
N	H_f	16.51	1.90	AB
N	H_h	12.65	2.09	C
Na	D_f	0.42	0.19	AB
Na	D_h	0.55	0.08	A
Na	H_f	0.15	0.21	C
Na	H_h	0.41	0.21	B
O	D_f	21.54	2.25	BC
O	D_h	20.65	3.49	C
O	H_f	25.76	1.55	B
O	H_h	31.92	5.36	A
P	D_f	0.00	0.00	C
P	D_h	0.18	0.19	C
P	H_f	0.75	0.28	A
P	H_h	0.40	0.21	B
S	D_f	0.40	0.10	A
S	D_h	0.56	0.18	A
S	H_f	0.43	0.10	A
S	H_h	0.42	0.34	A
Si	D_f	0.24	0.17	B
Si	D_h	0.73	0.71	B
Si	H_f	0.74	0.29	B
Si	H_h	3.64	2.47	A

H_h healthy hair side, H_f healthy flesh side, D_h damaged hair side, D_f damaged flesh side