Sometime we have to deal with values which exceed a certain threshold. Above this threshold the data can not (exactly) be determined.
As an example: We calculate density values from radiation measurements. Due to the statistical uncertainty of the radiation measurements it can happen that the calculated density exceeds the threshold from an accurate value (like 150 kg/m3) to a statement like "density > 200 kg/m3"
To present these values something like a limiter could be introduced. All values in a serie which exceeds this limit value could be equipt with an arrowhead.
Greetings,
Jack