Because there is no other data.

And to be clearer than BlackSwan as the last time you answered her "I am not able to understand your mail" and paraphrasing the link:

With any SQL or PL/SQL question, please, Post a working Test case: create table and insert statements along with the result you want with these data then we will be able work with your table and data. Explain with words and sentences the rules that lead to this result.

Before, Please read OraFAQ Forum Guide and How to use [code] tags and make your code easier to read.
Make sure that lines of code do not exceed 80 characters when you format.
Indent the code, use code tags and align the columns in result.
Use the "Preview Message" button to verify.
Also always post your Oracle version, with 4 decimals.

Use SQL*Plus and copy and paste your session, the WHOLE session.

In the end FEEDBACK to those that help you, we are waiting for you in your previous topics.

Regards
Michel