var barIsLifelessLevel0 … var barIsLifelessLevel1 … var barIsLifelessLevel2 … var channelBecomingActive … var isSuddenlyBusyLevel0 … var isSuddenlyBusyLevel1 … var isSuddenlyBusyLevel2 … var isSuddenlyQuietLevel0 … var isSuddenlyQuietLevel1 … var isSuddenlyQuietLevel2 … var newPeopleJoiningConversationLevel0 … var newPeopleJoiningConversationLevel1 … var newPeopleJoiningConversationLevel2 … var continueConversationLevel0 … var continueConversationLevel1 … var continueConversationLevel2 …