Problem:

Below are the field notes of a profile leveling work where some data are "accidentally" missing.

$\backslash$table$[[$STA$,$BS$,$HI$,$FS$,$ELEV,REMARKS$],[$BM$1,1\mathrm{.}56,,,569\mathrm{.}44,$BENCHMARK$],[1+000,,,5\mathrm{.}67,565\mathrm{.}33,$ALONG PROFILE LINE$],[1+100,,,2\mathrm{.}00,,$ALONG PROFILE LINE$],[1+200,,,3\mathrm{.}40,567\mathrm{.}60,$ALONG PROFILE LINE$],[1+300,,,,568\mathrm{.}00,$ALONG PROFILE LINE$],[1+400,,,6\mathrm{.}70,564\mathrm{.}30,$ALONG PROFILE LINE$],[$PT$1,,566\mathrm{.}00,8\mathrm{.}00,,$X $-$ TOP OF ROCK$],[1+500,,,3\mathrm{.}00,563\mathrm{.}00,$ALONG PROFILE LINE$],[1+600,,,4\mathrm{.}10,561\mathrm{.}90,$ALONG PROFILE LINE$],[1+700,,,5\mathrm{.}40,560\mathrm{.}60,$ALONG PROFILE LINE$],[1+800,,,,559\mathrm{.}00,$ALONG PROFILE LINE$],[1+900,,,5\mathrm{.}00,561\mathrm{.}00,$ALONG PROFILE LINE$],[2+000,,,3\mathrm{.}50,,$ALONG PROFILE LINE$],[2+100,,,2\mathrm{.}80,563\mathrm{.}20,$ALONG PROFILE LINE$],[2+200,,,2\mathrm{.}00,564\mathrm{.}00,$ALONG PROFILE LINE$],[2+300,,,0\mathrm{.}60,565\mathrm{.}40,$ALONG PROFILE LINE$],[2+400,,,0\mathrm{.}80,565\mathrm{.}20,$ALONG PROFILE LINE$],[,6\mathrm{.}10,,,563\mathrm{.}90,$TOP OF CONC. PAVEMENT$],[2+500,,,1\mathrm{.}72,568\mathrm{.}28,$ALONG PROFILE LINE$],[2+600,,,2\mathrm{.}78,567\mathrm{.}22,$ALONG PROFILE LINE$]]$