A food safety guideline is that the mercury in fish should be below $1$ part per million $($ppm$).$ Listed below are the amounts of mercury $($ppm$)$ found in tuna sushi sampled at different stores in a major city. Construct a $98\%$ confidence interval estimate of the mean amount of mercury in the population. Does it appear that there is too much mercury in tuna sushi?

$0\mathrm{.}59,0\mathrm{.}68,0\mathrm{.}10,0\mathrm{.}88,1\mathrm{.}31,0\mathrm{.}50,0\mathrm{.}87$

What is the confidence interval estimate of the population mean $?$

$($Round to three decimal places as needed.$)$