$(18$ pt$)$ The Falling Weight Deflectometer $($FWD$)$ was used to collect the load bearing capacity data on a "Surface treated pavement $+$ flexible base" pavement segment. The data on the loading and deflection are provided in the following table.

$\backslash$table$[[,,,$Deflection $($mil$),],[$No$,$STATION,LOAD$($lb$,$W$1,$W$2,$W$3,$W$4,$W$5,$W$6,$W$7,$SCI$],[1,0\mathrm{.}000$ K$,9000,34\mathrm{.}38,17\mathrm{.}71,8\mathrm{.}22,4\mathrm{.}68,3\mathrm{.}30,2\mathrm{.}71,2\mathrm{.}08,],[2,0\mathrm{.}100$ K$,9000,54\mathrm{.}21,24\mathrm{.}87,10\mathrm{.}82,5\mathrm{.}94,3\mathrm{.}74,2\mathrm{.}96,2\mathrm{.}34,],[3,0\mathrm{.}200$ K$,9000,66\mathrm{.}47,37\mathrm{.}74,16\mathrm{.}92,8\mathrm{.}56,6\mathrm{.}11,4\mathrm{.}33,3\mathrm{.}05,],[4,0\mathrm{.}296$ K$,9000,41\mathrm{.}13,25\mathrm{.}40,14\mathrm{.}17,7\mathrm{.}77,4\mathrm{.}47,2\mathrm{.}98,2\mathrm{.}07,],[5,0\mathrm{.}400$ K$,9000,40\mathrm{.}27,18\mathrm{.}55,6\mathrm{.}23,3\mathrm{.}55,2\mathrm{.}50,1\mathrm{.}88,1\mathrm{.}51,],[,,,,,,,,,$Mean,$],[,,,,,,,,,$Stdev,$]]$

Please calculate the following:

SCI for each test location, fill in the blanks in the table,

Mean and standard deviation for SCI of the five locations,

Use the "Simple diagnostics based on the deflection" table, provide a discussion on the pavement diagnostics on test location No$.2$ and No$.4.$