What is the best way to write SQL query?

Question

PostgreSQL

The feeling that this query can be written more concisely does not leave the feeling, but it does not reach how!

select  'Панель 1 ' as "панель",
        (select sum(no_light)/3600.0 from sector1  where button=1 AS "кнопка 1",
        (select sum(no_light)/3600.0 from sector1  where button=2 AS "кнопка 2",
        (select sum(no_light)/3600.0 from sector1  where button=3 AS "кнопка 3",
        (select sum(no_light)/3600.0 from sector1  where button=4 AS "кнопка 4",
        (select sum(no_light)/3600.0 from sector1  where button=5 AS "кнопка 5",
        (select sum(no_light)/3600.0 from sector1  where button=6 AS "кнопка 6",
        (select sum(no_light)/3600.0 from sector1  where button=7 AS "кнопка 7",
        (select sum(no_light)/3600.0 from sector1  where button=8 AS "кнопка 8",
        (select sum(no_light)/3600.0 from sector1  where button=9 AS "кнопка 9",
        (select sum(no_light)/3600.0 from sector1  where button=10 AS "кнопка 0",
        (select sum(no_light)/3600.0 from sector1  where button=0 AS "не выбрано";

Answer 1

can use IN() ? then inside the brackets you can list an array of values ​​​​and compare in WHERE with one field