(*TEST* flat inverted) --- filter B, bin 1, night 230509, compared to previous night 230508, sigma = 0.0542 --- (flat / previous inverted)
(*TEST* flat inverted) --- filter V, bin 1, night 230509, compared to previous night 230508, sigma = 0.0827 --- (flat / previous inverted)
(flat inverted) --- filter B, bin 1, night 230507
(flat inverted) --- filter GR, bin 1, night 220219
(flat inverted) --- filter I, bin 1, night 230507
(flat inverted) --- filter R, bin 1, night 230507
(flat inverted) --- filter SU, bin 1, night 230507
(flat inverted) --- filter V, bin 1, night 230507