##If using Estapa et al 2023 to convert SES atn to poc flux, then must also account for image size and collect area. Use the following to calculate atn flux: 

SEStraparea = 0.5;
SESimgarea = math.pi*(25/1000/2)**2  # diameter of lower end of funnel is 25 mm, compute area in m^2
SEScolltime = in days #for example a five min collect time would be 5/(60*24) 
MARS2023atn['F_atn']= MARS2023atn['atn']/SEScolltime*SESimgarea/SEStraparea