* February 22, 2011: This earthquake, with a magnitude of 6.3, caused widespread damage and resulted in 185 fatalities. It is widely considered the most devastating earthquake in Christchurch's history.
* September 4, 2010: This earthquake, with a magnitude of 7.1, occurred approximately 40 kilometers west of Christchurch and caused significant damage.
* June 13, 2011: This earthquake, with a magnitude of 5.7, was an aftershock of the February 22nd earthquake and caused further damage to already weakened structures.
Please clarify which earthquake you are asking about so I can provide you with the most accurate information.
