Profile Level Notes:

The elevation of BM A $=611\mathrm{.}01\text{'}$

$BS($plus sight$)$ on BMA$={4\mathrm{.}59}^{\text{'}}$

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

IFS $($minus sight$)$ on STA $0+50={3\mathrm{.}66}^{\text{'}}$

IFS $($minus sight$)$ on STA $1+00={4\mathrm{.}95}^{\text{'}}$

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

BS $($plus sight$)$ on TP$1=1\mathrm{.}97\text{'}$

IFS $($minus sight$)$ on STA $1+50={9\mathrm{.}75}^{\text{'}}$

FS $($minus sight$)$ on TP$2=3\mathrm{.}30$

What is the elevation of STA $0+50?$

Answer to $2_{{?}^{?}}(nd)$ decimal place $-$ example $110\mathrm{.}15-$ don't enter units

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