1. Select ELR Station(s) and details:

      ELR 1: Cape TownUpingtonDe AarPretoriaMeiningenLindenbergBergenSchleswigKuemmersbruckPayerneMünchen 12345678910111213141516171819202122232425262728293031 JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember 20112012201320142015201620172018 120900

      ELR 2: Cape TownUpingtonDe AarPretoriaMeiningenLindenbergBergenSchleswigKuemmersbruckPayerneMünchen 12345678910111213141516171819202122232425262728293031 JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember 20112012201320142015201620172018 120900

2. Enter estimated maximum daytime Temperature in °C :
    (Maximum temperature yesterday = 36.6 °C)

3. Enter estimated Dewpoint Temperature in °C :             
    (Maximum Dewpoint yesterday = 13 °C)

4. Refresh.

5. Interpret.
    - Blue Day Ceiling: DALR crosses ELR.
    - Cu Day Base: SALR starts before DALR crosses ELR.
         Cloud Tops: SALR crosses ELR