Reliability of switching times of the Crydom D2D12 SSR

Testsituation is as follows:
Switching time of SSR1 is 5 milliseconds
then a pause of 1 millisecond
then the second SSR is also switched 5 milliseconds

Measurements and switching by two Arduino Uno's
Times are measured im microseconds
Number of measurements is 90

On time SSR1
On time SSR2
In between time (between SSR1 and SSR2 there was a pause of 1 millisecond)
On time SSR1 and SSR2
was 5 milliseconds
Times in the table
in microseconds
Min   5160                       5164                                 680
Max  5392                       5396                                 912
The excel file with the data