When you are comparing the first weekend collections of two different films released in different time span, you are literally comparing oranges with apples, because some films get the benefit of 5 day holiday weekend while some films don’t. In the case of 5 - 6 day holiday weekend films, the film garners enough attention on its day 1 and day 2 and you could sense a gradual dip even on its first Saturday-Sunday. Whereas 3 day weekend film gets a solid Friday, Saturday and Sunday run.
In case of Theri, the film opened grandly on its opening day (Thursday), then had a dip on its second day as Friday was a working day, then a relatively better Saturday and an excellent Sunday.
Theri has garnered around 3,06,87,956 INR from its 4 day opening weekend at the Chennai city box office. Now let us see how other major releases have performed on its first week at the Chennai city box office. These numbers are approximate gross figures derived by Behindwoods box office analysis board.
2014 Anjaan - 2,35,93,522 (3 day opening weekend)
2014 Kaththi - 3,01,09,817 (5 day opening weekend)
2014 Lingaa - 2,59,56,363 (3 day opening weekend)
2015 I - 3,83,85,992 (5 day opening weekend)
2015 Yennai Arindhaal - 2,92,55,762 (4 day opening weekend)
2015 Puli - 2,84,97,108 (4 day opening weekend)
2015 Vedalam - 3,23,34,229 (6 day opening weekend).