Complex sentence: According to South Korean and Japanese estimates, the nuclear yield was about 10 kt, generating about a 5.3 magnitude seismic shock and acknowledged that this nuclear test has the highest yield to date (9 September 2016).
Split into simpler sentences: According to South Korean and Japanese estimates, the nuclear yield was about 10 kt, generating about a 5.3 magnitude seismic shock. This nuclear test has the highest yield to date (9 September 2016).