(*TEST* flat inverted) --- filter B, bin 2, night 201224, compared to previous night 201213, sigma = 0.0161 --- (flat / previous inverted)
(*TEST* flat inverted) --- filter SI, bin 2, night 201224, compared to previous night 201213, sigma = 0.0203 --- (flat / previous inverted)
(flat inverted) --- filter B, bin 2, night 201224
(flat inverted) --- filter SG, bin 2, night 201111
(flat inverted) --- filter SI, bin 2, night 201224
(flat inverted) --- filter SR, bin 2, night 201111
(flat inverted) --- filter V, bin 2, night 201222