calc_DIV                Calculate daily infection values
calc_c_closure          Calculate canopy closure date
calc_epidemic_onset     Calculate epidemic onset
calc_epidemic_onset_from_image
                        Calculate epidemic onset from image
calc_r_x0               Calculate growth rate and LAI at t0
calc_susceptibility     Calculate cDIV threshold for sugar beet
                        cultivars
format_weather          Format weather data into a standardised format.
latent_period           Calculate Cercospora Latent Period
read_sb_growth_parameter
                        Read LAI images at several time points
temperature_index       Get temperature index
weathr                  Weather station data
