Find the id and local authority of the station with has the highest average high temperature.
return station ;return high temperatures of  #1 ;return average of  #2 for each #1 ;return #1 where  #3 is  highest ;return id of  #4 ;return local authority of  #4 ;return #5 ,   #6
['select', 'project', 'group', 'superlative', 'project', 'project', 'union']