Reading of 公開中 and 興行収入

Hi All In the following News report is the reading of 公開中 こうかいちゅう and 興行収入 こううぎようしゅうにゅう ？

And if so does it translate as During 30 days of viewing of the anime movie by Walt Disney Japan、"The snow Queen called Anna" box office sales have reached approximately 20,370,000,000 yen.........?



ウォルト・ディズニー・ジャパンは３０日、公開中のアニメ映画「アナと雪の 女王」の興行収入が約２０３億７千万円に達し、「ハリ ー・ポッターと賢者の石」を抜いて歴代３位になったと発表した。１ 位は「千と千尋の神隠し」（３０４億円）、２位は「タ イタニック」（２６２億円）。

よろしくお願いします

The core of this sentence is
ウォルト・ディズニー・ジャパンは...と発表した。
Walt Disney Japan announced that ...

30日 is not duration (if so it should read 30日間), but the date. In this context it is most likely 30th of May, it's the date that the announcement was made.

The content of the announcement is:
公開中のアニメ映画「アナと雪の 女王」の興行収入が
(1) 約２０３億７千万円に達し、
(2) 「ハリ ー・ポッターと賢者の石」を抜いて歴代３位になった

Box office sales of "Frozen" (Ana to yuki no joou/Ana and the Snow Queen) which is playing now reached approx. JPY20,370,000 and became the 3rd in the all-time box office ranking, overtaking "Harry Potter and the Philosopher's Stone".

As undrentide-san translated, アナと雪の女王 means "Anna and the Snow Queen", not アナという雪の女王 "The snow Queen called Anna".

こうかいちゅう is correct but興行収入 is こうぎょうしゅうにゅう.

Thanks a lot guys. So the report was dated the 30th of May. Is the translation of 現在公開中 "now showing" and is it a common use in relation to cinema/entertainment ?
And one last question about the counter 位 is it pronounced as い？ as in いちい,にい,さんい etc...?

公開中 in current release
上映中 now showing