Or you just write out the margin of error explicitly... 98.6±0.2F (or whatever). Especially with errors in the order of .1, you might even write out more than

Or you just write out the margin of error explicitly... 98.6±0.2F (or whatever). Especially with errors in the order of .1, you might even write out more than the traditional number of digits, e.g. 98.64±.10, as it might make a significant difference if you regard 98.54...98.64 or 98.5...98.6 to be within your confidence interval.