LOWESS Trendline on Scatter Plot Shows Invalid Data

📊 Plotly Python
1

I’ve noticed an anomaly on my lowess chart but I cannot see anything that would be causing this spike. The number is Mbps and the maximum value in the database is below.

{'CorrectedLoad__max': 1843.335}

The chart I’m looking at.

image
image809×316 7.61 KB

If i zoom in on just the section used for this LOWESS segment I get the following.

image
image865×332 4.72 KB

Any thoughts on how I can identify this issue?

If it matters, the code used to generate this chart follows.

fig = px.scatter(
    df,
    x="TestTime",
    y="CorrectedLoad",
    color="SoftwareVersion",
    trendline="lowess",
    range_x=[start_date, end_date],
    title=f"{DUTModel} | Acceptable Frame Loss 0.5% | 1000 Flows BiDi",
    template="ggplot2",
    labels={
        "CorrectedLoad": "Throughput (Mbps)",
        "TestTime": "Test Timestamp",
        "SoftwareVersion": "Software Version",
    },
)