Different CPers has different ways of describing good lighting levels for different CPs.
CPers are generally accurate on temperature and humidity ranges as a standard measurement are used. However when lighting level is concerned, description such as direct, indirect, bright, shaded….. and so on.
I believe at tropical equator e.g. Singapore, light intensity would be have been much higher than, say USA. It will be helpful if the experts on this forum can provide the light intensity in Lux units for CPs….. please comment.