NavList:

Further to my post of 21 December, I have now studied the sights on the link that Frank provided

http://pplspc.org/nicholson/rj5_nicholson_42/jpg/rj5_nicholson_42r-0280.jpg

and there are a few interesting details that can be detected. First we can see that the chronometer rate applied is 3.7 seconds/day gaining. It is used on all days from 27 November up to and including 5 December, 1852. The three lunars on 2-4 December show the chronometer is 2^m38^s, 1^m17^s and 3^m21^s respectively, too fast compared to the used rate, but no adjustment to the chronometer error is applied. On 28 November the Noon longitude is determined by an equal altitude observation, about 5 minutes before and 5 minutes after LAN. Also on 3 December is a similar EA observation squeezed in. Time sights not connected with lunars are performed in the afternoon, the Sun bearing between 255° and 257°.

A few number of miscalculations can be found, but no one so large as to be obvious.

Lars