A$)$ The table below provides the data for a closed loop leveling with two setups, and $(0\mathrm{.}004m$ misclosure error. Fill in the missing entries.

$(10\%)$

$\backslash$table$[[$Point$,$BS$,$IS$,$FS$,$HI$,$H$],[1,1\mathrm{.}781,,,,],[2,,,,,78\mathrm{.}650],[3,,,1\mathrm{.}852,,],[4,,,,,77\mathrm{.}441],[5,,1\mathrm{.}893,,,],[1,,,1\mathrm{.}344,,78\mathrm{.}121],[,,,,,]]$

B$)$ The $(E,N,Z)$ coordinates for a triangular cell are $A(0,0,17\mathrm{.}4m),B(0\mathrm{.}0,10\mathrm{.}0,21\mathrm{.}6m),$ and $C(5\mathrm{.}0,8\mathrm{.}67,23\mathrm{.}7m).$ Draw the horizontal triangle ABC, and define the exact location of the contour line with $22m$ elevation. Scale $=\frac{1}{250}.$

$(8\%)$

C$)$ Given: $R_A=1\mathrm{.}524$&$R_B=2\mathrm{.}378m$ taken from a Level stationed at point $P$ with distances $PA=75m$ and $PB=25.$ Determine the level collimation angle if known $h_A=156\mathrm{.}782$ and $h_B=155\mathrm{.}958m,$ and provide the corrected staff readings at A & B$.$

$(8\%)$