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
By Fair Means or Foul other versions were released under the Superior/Alligata name. All versions were released on cassette with all versions except the Electron also released on floppy disk. The game was then released as a budget title by Codemasters in 1990 under the new title "Pro Boxing Simulator" (to fit with its long-running series). Controversially, this version had the words "New Release" on the cassette cover which led to complaints when people bought the game not realising it was the same as "By Fair Means or Foul". Codemasters then reissued the game with the "New Release" box changed to "Previously known as 'Fair