More detailed statistical analysis of the signal, and of 16 days of surrounding data from 12 September to 20 October 2015, identified GW150914 as a real event, with an estimated significance of at least 5.1 sigma or a confidence level of 99.99994%.
在对信号经过更为细致的统计分析，并对自9月12日至10月20日中16天的数据也进行分析后，研究人员确认GW150914为真实的引力波现象，显著性超过5.1σ，置信水平为99.99994%。