Glacier Mass Balance

{
  "$schema":"https://vega.github.io/schema/vega-lite/v5.json",
  "data":{"values":[
    {"elev":4500,"net":2.2},{"elev":4200,"net":1.6},{"elev":3900,"net":0.5},
    {"elev":3600,"net":-0.7},{"elev":3300,"net":-2.0},{"elev":3000,"net":-3.2},
    {"elev":2700,"net":-4.3},{"elev":2400,"net":-5.4}
  ]},
  "layer":[
    {"mark":{"type":"line","color":"#16a34a","strokeWidth":3,"point":true},
     "encoding":{
       "x":{"field":"net","type":"quantitative","title":"Net mass balance (m w.e.)"},
       "y":{"field":"elev","type":"quantitative","title":"Elevation (m)"}
     }},
    {"mark":{"type":"rule","color":"#dc2626","strokeDash":[4,4]},
     "encoding":{"x":{"datum":0}}}
  ],
  "width":380,"height":340
}