,September - April ablation zone elevation change (m),,,,,,,, Basin id,2011,2012,2013,2014,2015,2016,2017,2018,2019 1,0.42,0.45,0.47,0.42,0.12,0.55,0.47,0.71,0.32 2,0.71,0.12,0.68,0.96,0.35,0.50,0.85,0.72,0.38 3,1.13,0.98,0.41,1.11,0.90,0.85,1.07,0.36,0.70 4,5.93,1.47,4.58,4.16,1.76,2.38,3.20,2.81,1.63 5,1.18,0.87,1.71,1.76,1.83,1.55,1.12,1.09,0.75 6,1.00,0.75,1.27,0.83,0.27,0.91,1.66,0.88,0.44 7,1.09,0.60,1.52,0.67,0.65,1.24,1.64,1.40,0.74 8,0.91,0.48,0.23,0.37,0.44,0.96,0.72,0.62,0.93