Врядли применим но вот:
private static void AddTimeAxis(this PlotModel plot){
plot.Axes.Add
(
new DateTimeAxis()
{
StringFormat = "yyyy-MM-dd \n HH:mm:ss",
AxisTitleDistance = 15,
IntervalLength = 55,
MajorGridlineStyle = LineStyle.Solid,
Position = AxisPosition.Bottom,
}
);
}