	2 ft	4 ft	6 ft	8 ft	10 ft	12 ft	14 ft	16 ft	18 ft	20 ft	22 ft
BT-1	−48.0	−50.0	−48.4	−58.1	−62.7	−69.4	−71.3	−78.8	−83.3	−82.1	−91.3
BT-2	−45.3	−47.2	−53.6	−61.3	−65.9	−67.3	−70.1	−75.8	−82.4	−86.0	−90.6
BT-3	−47.5	−51.8	−55.0	−57.1	−63.0	−66.5	−71.5	−77.6	−82.6	−81.9	−92.8
BT-4	−45.8	−47.7	−55.4	−55.6	−60.2	−68.3	−71.9	−74.2	−77.9	−87.7	−89.0
BT-5	−44.0	−49.5	−54.3	−57.7	−65.5	−69.5	−71.1	−77.4	−78.9	−86.3	−87.9