Help with -# data messing up my data

I’m sure it is an easy fix but I don’t know how to. If someone could help me by editing the - data caused by power outage for my daily power total graph. Here is the file data below. Thanks.

“Date-time string”, “Node rfmpi_pulse: 15kWh total”

2020-04-30 09:00:00, 4689.0
2020-05-01 09:00:00, 5166.5
2020-05-02 09:00:00, 5633.5
2020-05-03 09:00:00, 5719.5
2020-05-04 09:00:00, 5789.5
2020-05-05 09:00:00, 5948.0
2020-05-06 09:00:00, -4729655.7
2020-05-07 09:00:00, 3077.4
2020-05-08 09:00:00, 4396.8
2020-05-09 09:00:00, 4748.4
2020-05-10 09:00:00, 3018.8
2020-05-11 09:00:00, 2747.7
2020-05-12 09:00:00, 2670.5
2020-05-13 09:00:00, 2783.6
2020-05-14 09:00:00, 3048.3
2020-05-15 09:00:00, 4680.9
2020-05-16 09:00:00, null

Thanks

Morgan

Edit - formatted text. Moderator.

Hello @Morgan_Werner is this on emoncms.org or a local emonpi/emonbase installation?

Yes, local installation

Hello @Morgan_Werner you may be able to use the Edit Realtime visualisation from the Visualisations page to edit this datapoint, e.g: