(*TEST* flat inverted) --- filter B, bin 2, night 230327, compared to previous night 230326, sigma = 0.0045 --- (flat / previous inverted)
(*TEST* flat inverted) --- filter R, bin 2, night 230327, compared to previous night 230326, sigma = 0.0060 --- (flat / previous inverted)
(*TEST* flat inverted) --- filter V, bin 2, night 230327, compared to previous night 230326, sigma = 0.0050 --- (flat / previous inverted)