改造前			改造后
炉号	[O]ppm	[N]ppm	炉号	[O]ppm	[N]ppm
1-1735	70	54.2	3-9129	19.2	61
3-2009	67.6	55.5	3-9129	27.9	61.3
1-1903	75.3	58.2	3-9130	20.6	63.4
2-6779	83.6	60	3-9133	20.3	59.5
2-6781	64.4	53.8	3-9171	26.9	50.3
2-6782	55.8	56.3	3-9172	28	47.1
2-9232	72.5	41.3	3-9186	20.5	68.1
2-9234	94.7	55.1	3-9187	26.7	53.3
2-9241	78.2	50.9	3-9188	18.1	61.6