Phase: RAMI3BRF in the principal plane for single-scattered radiation
brfpp_co_sgl for HOM03_DIS_ERE_RED_20 testcase.
brfpp_co_sgl for HOM03_DIS_ERE_RED_50 testcase.
brfpp_co_sgl for HOM03_DIS_ERE_NIR_20 testcase.
brfpp_co_sgl for HOM03_DIS_ERE_NIR_50 testcase.
brfpp_co_sgl for HOM13_DIS_PLA_RED_20 testcase.
brfpp_co_sgl for HOM13_DIS_PLA_RED_50 testcase.
brfpp_co_sgl for HOM13_DIS_PLA_NIR_20 testcase.
brfpp_co_sgl for HOM13_DIS_PLA_NIR_50 testcase.