(*TEST* flat inverted) --- filter B, bin 2, night 220302, compared to previous night 220227, sigma = 0.0302 --- (flat / previous inverted)
(*TEST* flat inverted) --- filter SI, bin 2, night 220302, compared to previous night 220221, sigma = 0.0104 --- (flat / previous inverted)
(flat inverted) --- filter B, bin 2, night 220302
(flat inverted) --- filter SG, bin 2, night 220217
(flat inverted) --- filter SI, bin 2, night 220302
(flat inverted) --- filter SR, bin 2, night 220217
(flat inverted) --- filter V, bin 2, night 220221