Adding column name into event container

And one more question regarding adding a column name to the event container.

I’ve tried to add a new if to event-container.php and can receive the column ID for each event container. However, I can’t find any parameter for retrieve column name.

My code snippet from event-container.php:

if ( $item[ 'post' ] && ! empty( $item[ 'column_id' ] ) ): ?>
   <p class="event-subtitle"><?php echo $item[ 'column_id' ]; ?></p>
<?php endif;

Could you help to solve this problem? This will be very useful if there is no way to stick a table header row while page scrolling ??