Table 6. The sum of average iron and sulfur and the others inorganic matter by outside and inside with shipwrecks (ICP-AES; mg/kg)

Variable	Shinan		Yeongheungdo	Jindo	Sibidongpado	Wando
	Degradation	Lightly degradation
Outside
Fe	222,252.23	103,674.88	261,369.53	317,637.30	966.62	2,394.76
S	120,921.77	113,507.17	72,656.93	56,496.69	5,522.37	6,592.81
Others	11,203.65	11,631.37	48,743.12	15,028.57	6,118.21	2,358.78
Fe + S	343,174.00	217,182.05	334,026.46	374,133.99	6,488.99	8,987.57
Fe / S	1.84	0.91	3.60	5.62	0.18	0.36
Inside
Fe	163,217.31	35,386.90	105,081.31	29,885.93	709.88	2,809.06
S	138,749.83	29,567.44	56,817.26	16,655.37	6,665.13	2,241.12
Others	6,044.36	2,022.82	2,181.34	5,103.18	5,060.37	2,512.31
Fe + S	301,967.14	64,954.35	161,898.57	46,541.30	7,375.01	5,050.18
Fe / S	1.18	1.20	1.85	1.79	0.11	1.25

ICP-AES: inductively coupled plasma atomic emission spectrometer.