In a soil compaction test, the following data was collected;

Water content of sample $(\%)9\mathrm{.}311\mathrm{.}814\mathrm{.}317\mathrm{.}620\mathrm{.}823\mathrm{.}0$

Bulk $($moist$)$ unit weight $($kN$/$m$3)18\mathrm{.}1318\mathrm{.}8119\mathrm{.}6820\mathrm{.}1519\mathrm{.}9719\mathrm{.}53$

Specific gravity of solids $=2\mathrm{.}64$

$2\mathrm{.}1$ Draw an accurate graph which represents the dry density compaction curve for this soil and identify accurately from this graph the maximum dry density $($MDD$)$ and optimum moisture content $($OMC$)$ of the soil.

$2\mathrm{.}2$ Field compaction control tests carried out at $4$ site locations recorded the following values;

Test $1234$

Vol $($cc$)946980957967$

Wet mass $($g$)1777189219342087$

Dry Mass $($g$)1551170516561780$

If field compaction in$-$situ moisture content may vary by $2\%$ above OR below the OMC value determined in Q$2\mathrm{.}1,$ and in$-$situ dry density must be at least $95\%$MDD as determined in Q$2\mathrm{.}1$ above, determine which of the four field compaction control tests $(1-4)$ meets specifications.

$2\mathrm{.}3$ Calculate and plot the line representing the Zero Air Voids for the soil in Q$2\mathrm{.}1,$ using a moisture content that varies from $13\%$ to $22\%$ in intervals of $3\%.$ If one of the field control tests in Q$2\mathrm{.}2$ were suspected of being incorrectly recorded, which one of tests $1-4$ would it be any why?