13. (20%) Plan-view sketch of benchmark leveling runs are shown in the figure below. Along each line representing a sight is the value of the rod reading for that sight. The numbering of the TPS shows the direction of the level run. Place the data in the form of field notes. Include the arithmetic check. Assuming that the average length of each BS and FS is 125 ft. Determine the accuracy of the survey. BM 2 52.163 1.634 7.283 TP 3 8.642 9.605 7.421 TP 1 4.572 7.241 5.735 TP 2 8.926 3.645 อ BM 7 7