Profile Level Notes:

The elevation of BM A $=508\mathrm{.}64$

BS $($plus sight$)$ on BM A $=5\mathrm{.}75$

IFS $($minus sight$)$ on STA $0+00=2\mathrm{.}95$

IFS $($minus sight$)$ on STA $0+50=3\mathrm{.}37$

IFS $($minus sight$)$ on STA $1+00=4\mathrm{.}66$

FS $($minus sight$)$ on TP$1=9\mathrm{.}16$

BS $($plus sight$)$ on TP$1=3\mathrm{.}13\text{'}$

IFS $($minus sight$)$ on STA $1+50=9\mathrm{.}17$

FS $($minus sight$)$ on TP$2=3\mathrm{.}01$

What is the elevation of the STA $1+50?$

Answer to $2$nd decimal place $$ example $110\mathrm{.}15$ don$$t enter units