2023-09-10_asina_S_iqr_timeseries.png

Daily Antarctic sea ice extent as of September 10, 2023 (blue line), along with daily ice extent data for the four previous years (2022 in green, 2021 in orange, 2020 in brown, 2019 in magenta) and the record maximum year, 2014 (dashed brown). The 1981 to 2010 median extent in dark gray. (Median means "in the middle;" half of years were smaller, and half were larger.) The gray areas around the median line show the interquartile (central 50 percent of the data) and interdecile (central 80 percent) ranges of the data for all years. Sea Ice Index data. Image by National Snow and Ice Data Center.