Understanding Polish bus/train Timetables?

I've been to Poland many times and have yet to grasp how their timetables work.

Whether it's for a bus or train they seem to be unfathomably hard to understand. I make an attempt every year to take a minute step forward in my quest to break this enigma code but I'm ashamed to say I have made ZERO progress over the years.

in wroclaw. bus and tram timetables.

set out in three columns: left, weekdays. middle, weekends. right, holidays.

As I remember (from ancient times) our timetables the first column is hour and on the right side we got minutes

8 09 14 28 41 57
9 11 19 39
10 03 26
11 04 16 29 45 59

What you mean? Any pictures?