Talk:Spring 2015 Event/@comment-26049705-20150507222754/@comment-26348726-20150507230658

The post-drop Roma drop rate on node N is roughly 1.5%, out of all dropped ships on that node. Therefore, you can expect a Roma about 0.75% of the time if you always S rank that node.

However, do note that this 1.5% drop rate is from data aggregated from difficulties that have been attempted on that node. According to wikiwiki, Roma has not been 'hard' confirmed to drop on medium at that node yet, only 'soft' reports, so it's up to you whether you want to focus on that node or not.

"Roma(甲のみ. 乙での報告もあり、要検証)"