Cloud the bottom of the hierarchy. Clouds in the troposphere assume five physical forms based on structure and process of formation. These forms are commonly used for the purpose of satellite analysis. They are given below in approximate ascending order of instability or convective activity. "Non-convective" stratiform clouds appear in "stable" airmass conditions and, in general, have flat sheet-like structures that can form at any altitude in the troposphere. The stratiform group is divided by altitude range into the genera cirrostratus (high-level), altostratus (mid-level), stratus (low-level), and nimbostratus (multi-level). Fog is commonly considered a surface-based cloud layer. The fog may form
Decisional balance sheet and often the cells are inter-connected. For example, looking at the table above, if something were to happen in the individual's marital life (an argument or the partner leaves or becomes pregnant or has an accident), the event can either increase or decrease how much weight the person gives to the elements in the balance sheet that refer to the relationship. Another refinement of the balance sheet is to use a scoring system to give numerical weights to different elements of the balance sheet; in such cases, the balance sheet becomes what is often called a decision matrix. Similarly, Fabio