(*TEST* flat inverted) --- filter B, bin 2, night 221002, compared to previous night 220917, sigma = 0.0895 --- (flat / previous inverted)
(*TEST* flat inverted) --- filter SI, bin 2, night 221002, compared to previous night 221001, sigma = 0.0734 --- (flat / previous inverted)
(flat inverted) --- filter B, bin 2, night 221002
(flat inverted) --- filter SG, bin 2, night 220910
(flat inverted) --- filter SI, bin 2, night 221001
(flat inverted) --- filter SR, bin 2, night 220908
(flat inverted) --- filter V, bin 2, night 220908