Fusion Charts vertical axis labels

I'm trying to characterize the values on the vertical axis, labeling them as text. For example, a value of 25 would be "Low", 50 would be "Medium" and 75 would be "High". I don't see anywhere in the documentation that that can be done. The following graph would be my desired result:

Risk Assessment

In fact, there doesn't seem to be a way to do this in either Excel or Google Sheets (unless I'm missing something).

Any help would be appreciated.

I searched the documentation and found nothing to help solve my problem. I also researched Excel and Google sheets but to no avail.

Since you tagged fusioncharts, yes you can achieve with annotations object in fusioncharts - https://www.fusioncharts.com/dev/chart-guide/chart-configurations/annotations/real-life-use-cases#provide-more-information-about-data-plots

A quick look at the object would be like this -

 "annotations": {
    "origw": "600",
    "origh": "450",
    "autoscale": "1",
    "groups": [{
        "id": "ds1tips",
        "items": [{
            "id": "indicator-line",
            "type": "line",
            "dashed": "1"
        }, {
            "id": "tip1_1",
            "type": "rectangle",
            "fillcolor": "#6baa01",
            "x": "$dataset.0.set.0.x + 5",
            "y": "$dataset.0.set.0.y - 30",
            "tox": "$dataset.0.set.0.x + 80",
            "toy": "$dataset.0.set.0.y - 10",
            "visible": "0"
        }]
    }, {
        "id": "yaxisline",
        "items": [{
            "id": "line",
            "type": "line",
            "color": "#f8bd19",
            "x": "$canvasstartx - 5",
            "y": "$canvasstarty",
            "tox": "$canvasstartx - 5",
            "toy": "$canvasendy",
            "thickness": "3"
        }, {
            "id": "none-label-bg",
            "type": "rectangle",
            "fillcolor": "#f8bd19",
            "x": "$canvasstartx - 60",
            "tox": "$canvasstartx - 15",
            "y": "$canvasendy - 20",
            "toy": "$canvasendy",
            "radius": "3"
        }, {
            "id": "none-dot",
            "type": "circle",
            "radius": "5",
            "x": "$canvasstartx - 5",
            "y": "$canvasendy - 10",
            "color": "#f8bd19"
        }, {
            "id": "none-label",
            "type": "text",
            "fillcolor": "#ffffff",
            "text": "None",
            "x": "$canvasstartx - 37",
            "y": "$canvasendy - 12",
            "fontsize": "12",
            "bold": "1"
        }, {
            "id": "few-label-bg",
            "type": "rectangle",
            "fillcolor": "#f8bd19",
            "x": "$canvasstartx - 55",
            "tox": "$canvasstartx - 15",
            "y": "$canvasendy - 100",
            "toy": "$canvasendy - 80",
            "radius": "3"
        }, {
            "id": "few-dot",
            "type": "circle",
            "radius": "5",
            "x": "$canvasstartx - 5",
            "y": "$canvasendy - 90",
            "color": "#f8bd19"
        }, {
            "id": "few-label",
            "type": "text",
            "fillcolor": "#ffffff",
            "text": "Few",
            "x": "$canvasstartx - 35",
            "y": "$canvasendy - 92",
            "fontsize": "12",
            "bold": "1"
        }, {
            "id": "moderate-label-bg",
            "type": "rectangle",
            "fillcolor": "#f8bd19",
            "x": "$canvasstartx - 85",
            "tox": "$canvasstartx - 15",
            "y": "$canvasendy - 180",
            "toy": "$canvasendy - 160",
            "radius": "3"
        }, {
            "id": "moderate-dot",
            "type": "circle",
            "radius": "5",
            "x": "$canvasstartx - 5",
            "y": "$canvasendy - 170",
            "color": "#f8bd19"
        }, {
            "id": "moderate-label",
            "type": "text",
            "fillcolor": "#ffffff",
            "text": "Moderate",
            "x": "$canvasstartx - 50",
            "y": "$canvasendy - 172",
            "fontsize": "12",
            "bold": "1"
        }, {
            "id": "maximum-label-bg",
            "type": "rectangle",
            "fillcolor": "#f8bd19",
            "x": "$canvasstartx - 88",
            "tox": "$canvasstartx - 15",
            "y": "$canvasendy - 260",
            "toy": "$canvasendy - 240",
            "radius": "3"
        }, {
            "id": "maximum-dot",
            "type": "circle",
            "radius": "5",
            "x": "$canvasstartx - 5",
            "y": "$canvasendy - 252",
            "color": "#f8bd19"
        }, {
            "id": "maximum-label",
            "type": "text",
            "fillcolor": "#ffffff",
            "text": "High",
            "x": "$canvasstartx - 52",
            "y": "$canvasendy - 252",
            "fontsize": "12",
            "bold": "1"
        }]
}