Temperature in Deg.C
      +--+---+---+----+---+---+----+---+
      |  +   +   +    +   +   +    +   +
   20 ++                      ***     ++
      |         Last 24 Hours *  **    |
      |                     **     *   |
      |                    *        *  |
   18 ++                   *        ***+
      |                   *            *
      |                   *            *
   16 ++                 *            ++
      ***                *             |
      |  *              *              |
      |   **            *              |
   14 ++    **         *              ++
      |       *        *               |
      |        *      *                |
   12 ++        *    *                ++
      |          ****                  |
      |  +   +   +    +   +   +    +   +
      +--+---+---+----+---+---+----+---+
     Midnight           Noon