select * from crosstab(
'SELECT n_etap,
  round(avg(t_steel)::numeric,1),round(avg(t_borov)::numeric,1), round(avg(t_left_regen)::numeric,1),round(avg(t_right_regen)::numeric,1),round(avg(t_gaz_pech)::numeric,1),round(avg(t_mazut_pech)::numeric,1),
  round(avg(t_air_kompress)::numeric,1),round(avg(f_air)::numeric,1),round(avg(f_mazut)::numeric,1),round(avg(f_gaz)::numeric,1),round(avg(f_air_kompress)::numeric,1),round(avg(f_air_inten)::numeric,1),round(avg(f_air_rasp)::numeric,1),
  round(avg(p_pech)::numeric,1),round(avg(p_borov)::numeric,1),round(avg(p_gaz_pech)::numeric,1),round(avg(p_gaz_left_burn)::numeric,1),round(avg(p_gaz_right_burn)::numeric,1),round(avg(p_air)::numeric,1),round(avg(p_air_kompress)::numeric,1),
  round(avg(p_air_rasp_left_burn)::numeric,1),round(avg(p_air_rasp_right_burn)::numeric,1),round(avg(dym_percent)::numeric,1),round(avg(air_percent)::numeric,1),round(avg(gaz_l_plavka)::numeric,1),
  round(avg(gaz_r_plavka)::numeric,1),round(avg(fakel_l_set)::numeric,1),round(avg(fakel_r_set)::numeric,1)
FROM real_time_data_mp2
WHERE n_plavka=1140
GROUP BY n_etap order by n_etap asc'
)
as
t(
c int,c1 numeric,c2 numeric,c3 numeric,c4 numeric,c5 numeric,c6 numeric,c7 numeric,c8 numeric,c9 numeric,c10 numeric
);

SELECT *  FROM   crosstab('SELECT unnest(''{//you column}''::text[]) AS col,row_number() OVER (),
                           unnest(ARRAY[//you column]) AS val
                           FROM //table
                           Where ... GROUP BY //name column ORDER BY generate_series(1,//you column count), 2')
                               t (//name column out) ;