Determine the valence intensity of the following tweet, considering the mental state of the author. Assign a real number between 0 and 1, where 0 denotes extremely negative and 1 denotes extremely positive.
Tweet: Pre-game nerves have settled in 😱 i'l be #cheering from home guys 🔴⚪️🙌🏻🏉 #AFLCatsSwans #ProudlySydney #goswans @sydneyswans @SwansSupport
0.823