A university administered the SERVQUAL survey to its customers as a way to assess its current position in the market. On the basis of $80$ responses, the following averages were computed for the assurance construct.

Item

#

Avg.

Perception

Avg.

Expectation

$1$

$6\mathrm{.}1$

$6\mathrm{.}3$

$2$

$5\mathrm{.}8$

$5\mathrm{.}9$

$3$

$6\mathrm{.}1$

$6\mathrm{.}4$

$4$

$6\mathrm{.}9$

$6\mathrm{.}1$

What is the difference for the reliability dimension?