,May - August ablation zone elevation change (m),,,,,,,,, Basin id,2011,2012,2013,2014,2015,2016,2017,2018,2019,2020 1,-0.69,-1.04,-0.25,-0.74,-0.97,-0.66,-0.63,-0.65,-1.24,-1.01 2,-0.8,-0.65,-0.37,-1.1,-0.86,-0.99,-0.73,-0.76,-1.13,-0.44 3,-0.67,-1.61,-0.44,-1.21,-0.82,-1.21,-0.88,-0.89,-1.23,-1.66 4,-4.27,-4.44,-2.81,-4.39,-5.12,-5.17,-3.41,-4.37,-1.37,-5.42 5,-0.81,-2.59,-0.96,-2.2,-1.97,-2.37,-1.73,-1.73,-1.83,-1.71 6,-1.58,-1.68,-1.44,-1.06,-0.86,-1.41,-0.88,-1.54,-1.49,-1.4 7,-1.26,-2.19,-1.64,-1.12,-1.47,-1.92,-0.96,-1.87,-1.94,-1 8,-0.94,-1.72,-0.76,-0.69,-1.63,-1.38,-1.01,-1.14,-2.77,-1.1