Mean cloud cover over ten orbits (coloured) with the mean 0 °C surface temperature contour and wind-vectors at 8.5 km, for the nitrogen dominated tidally-locked simulations, with and without filtering of optically thin cloud. Within each altitude range (low < 2 km < medium < 5.5 km < high) the cloud cover is given by the maximum cloud fraction (∈ [0,1]) on any model level. If only one type of cloud is present, the colourbar shows that fraction, with a contour interval of 0.1. If more than one type of cloud is present, the colourbar shows the average of the two or three cloud types present, again with colourbar interval of 0.1.