Title: Frequency comb images

Image files, exported as .asc (ASCII) type files, which can be opened in Notepad, Excel, Origin, Matlab or other programs.

Each image file is the result of 190 averaged images, each at 50 microseconds exposure time, total integration time of 9.5 milliseconds

The data in the image files need to be corrected for a digital value offset, which is 18320.65. Subtract this offset from the supplied files before converting to absorbance.

The frequency comb repetition rates for each image file are as follows:
f_rep_1: 249.9995 MHz
f_rep_2: 249.9996 MHz
f_rep_3: 249.9997 MHz
f_rep_4: 249.9998 MHz
f_rep_5: 249.9999 MHz
f_rep_6: 250.0000 MHz
f_rep_7: 250.0001 MHz
f_rep_8: 250.0002 MHz
f_rep_9: 250.0003 MHz
f_rep_10: 250.0004 MHz

The gas cell and pressure parameters for the above data are as follows:
Total path length: 430 cm
Total pressure: 9.1 mbar, 0.65% methane in nitrogen gas mixture

"Signal" images have methane in the gas cell, while "background" images just have nitrogen in the gas cell.