(*TEST* flat inverted) --- filter SG, bin 2, night 220910, compared to previous night 220703, sigma = 0.0039 --- (flat / previous inverted)
(*TEST* flat inverted) --- filter SR, bin 2, night 220910, compared to previous night 220908, sigma = 0.0042 --- (flat / previous inverted)
(flat inverted) --- filter B, bin 2, night 220811
(flat inverted) --- filter SG, bin 2, night 220910
(flat inverted) --- filter SI, bin 2, night 220811
(flat inverted) --- filter SR, bin 2, night 220908
(flat inverted) --- filter V, bin 2, night 220908