Extreme Frequency (1992-2007) by region

Extreme Frequency by first (1992-1999) and last (2000-2007) 8 years

Extreme Frequency by high and low (1995, 1999, 2000, 2002, 2004-2007) ice extent years

Extreme Frequency summary statistics by first and last 8 years

Extreme Frequency summary statistics by high and low ice extent years