Contents:
disc()
farms()
calc_beta()
calc_dhi()
check_range()
cloud_variability()
dark_night()
linear_variability()
merge_rest_farms()
normal_variability()
rayleigh()
screen_cld()
screen_sza()
ti_to_radius()
ti_to_radius_csv()
tri_variability()
uniform_variability()
Ensure that data values are in correct range.