(*TEST* flat inverted) --- filter B, bin 1, night 210421, compared to previous night 210419, sigma = 0.0063 --- (flat / previous inverted)
(*TEST* flat inverted) --- filter I, bin 1, night 210421, compared to previous night 210419, sigma = 0.0078 --- (flat / previous inverted)
(*TEST* flat inverted) --- filter R, bin 1, night 210421, compared to previous night 210419, sigma = 0.0166 --- (flat / previous inverted)
(*TEST* flat inverted) --- filter V, bin 1, night 210421, compared to previous night 210419, sigma = 0.0121 --- (flat / previous inverted)
(flat inverted) --- filter B, bin 1, night 210419
(flat inverted) --- filter C, bin 1, night 201004
(flat inverted) --- filter CV, bin 1, night 210220
(flat inverted) --- filter I, bin 1, night 210419
(flat inverted) --- filter R, bin 1, night 210419
(flat inverted) --- filter V, bin 1, night 210419