(*TEST* flat inverted) --- filter HA, bin 1, night 231017, compared to previous night 231016, sigma = 0.0035 --- (flat / previous inverted)
(*TEST* flat inverted) --- filter R, bin 1, night 231017, compared to previous night 231016, sigma = 0.0031 --- (flat / previous inverted)
(*TEST* flat inverted) --- filter SI, bin 1, night 231017, compared to previous night 231016, sigma = 0.0031 --- (flat / previous inverted)
(*TEST* flat inverted) --- filter SU, bin 1, night 231017, compared to previous night 231016, sigma = 0.0037 --- (flat / previous inverted)