Temperature in Deg.C
      +-+--------+--------+---------+--------+--------+--------+------+
      | +        +        +         *        *        +        +      |
      |                             **      ****      **              |
   25 ++                            **      *  *      ***       *    ++ 25
      |                            ****     *  *     *  *      ***    |
      |                            *  *    *   **    *   *     *  *   |
   20 ++                  *        *   *   *     *  *    *     *  *  ++ 20
      |                   ***     *    *   *     ** *    *     *   *  |
      |                   *  *    *     *  *      * *    *    *    ****
      |          ***     *   *    *      **        *      *   *    ** |
   15 *+         *  *    *   **   *      **                ****      ++ 15
      *****     *   **  *     **  *                         **        |
      |* * *    *    ** *      ***                                    |
   10 +*   *    *     ***       **                                   ++ 10
      |     *   *     ***                                             |
      |      * *                                                      |
      |      * *                                                      |
    5 +++    **  +        +         +        +        +        +     ++ 5
      +-+--------+--------+---------+--------+--------+--------+------+
       Wed      Thu      Fri       Sat      Sun      Mon      Tue
     A Week Ago                                                     Now