Annotations and formalisms

An effort has been done to include into the formula also the conditions that were specified only in the text body by the authors.
A unified notation was employed for all formulas, so that they can appear also quite different from the formulation in the original publication.

Indices that were calculated only from current (mostly daily) meteorological values were not denoted with subscripts.
In the case of calculation with values from the previous days, the subscript t was employed to denote the current value, t-1 for the previous day, and so on.