'Furnace' 'Wafer Type' 'Thickness' '1' 'Virgin' 90.1 '1' 'Virgin' 90.7 '1' 'Virgin' 89.4 '1' 'In-House' 90.4 '1' 'In-House' 88.8 '1' 'In-House' 90.6 '1' 'External' 92.6 '1' 'External' 90 '1' 'External' 93.3 '2' 'Virgin' 91.9 '2' 'Virgin' 88.6 '2' 'Virgin' 89.7 '2' 'In-House' 90.3 '2' 'In-House' 91.9 '2' 'In-House' 91.5 '2' 'External' 88.3 '2' 'External' 88.2 '2' 'External' 89.4 '3' 'Virgin' 88.1 '3' 'Virgin' 90.2 '3' 'Virgin' 86.6 '3' 'In-House' 91 '3' 'In-House' 90.4 '3' 'In-House' 90.2 '3' 'External' 91.5 '3' 'External' 89.8 '3' 'External' 89.8