Two stations P and Q are on the opposite banks of a river. Following observations were taken in reciprocal levelling.
|
Instrument near |
Staff reading on |
|
|
P |
Q |
|
|
P |
1.400 |
3.500 |
|
Q |
0.600 |
2.200 |
R.L. of P is 200.000 m, and then R.L. of Q is nearly :
1
199.3
2
201.7
3
200.0
4
198.2