Moreover, according to Anna Lenerová, the head of O2 TV content, interest in live broadcasting increased by 21%.
Much sharper increases were seen by the news channel CT24 (+346%) and adult channels (+191%).
She added that the proportion of linear (live) and recorded viewing also changed, with almost two-thirds of programmes watched live, equivalent to a 10 percentage point increase on the previous month.
Also, linear viewing was largely through the set-top box, while over half of back view viewership was via the website or a mobile app.
The free inclusion of PornHub TV also attracted great interest, with every fourth O2 TV customer watching the channel at least once, for an average of 21 minutes.
PornHub TV will remain free of charge until April 15.