A manager uses this equation to predict demand for landscaping services: $F_t=6+5t$ Over the past eight periods, demand has been as follows:

$\backslash$table$[[$Period$,t$:$,1,2,3,4,5,6,7,8],[$Demand:$,12,16,16,26,26,36,36,41]]$

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Compute the tracking signals for Periods $1-8.($Negative values should be indicated by a minus sign. Round your intermediate calculations and final answers to $3$ decimal places.$)$

$\backslash$table$[[$Period$,t,$Tracking signal$],[1,],[2,],[3,],[4,],[5,],[6,],[7,],[8,]]$