| Time When 1788 |
Longitude by Time Keeper |
Longitude by Observation |
Correctd. to be appd to redce them to 3h..36′ on the 14th. |
True Longd by observn at 3h..36 of ye 14th |
Longitude turned into Time |
T K slow for Mean Time at Greenwich |
| April 27th | 51°..50′..00″W | 51°..49′..00″W | 47°..17′..38″ | 4°..31′..22″W | ||
| 51..40..00 | 4..22..22 | |||||
| 51..15..00 | 3..57..22 | |||||
| May 14th | 4..32..22 | 4..58..13 | 4..58..13 | |||
| 4..47..20 | 4..47..20 | |||||
| 4..19..45 | 4..19..45 | |||||
| 4..16..00 | 4..16..00 | |||||
| 4..18..30 | 4..18..30 | |||||
| 15th | 2..31..59 | 2..44..00 | + 2..00..23 | 4..44..33 | ||
| 2..59..00 | 4..59..23 | |||||
| 2..44..07 | 4..44..30 | |||||
| Mean Longitude at 3h..36′ the 14th May | 4..32..39 W = | 0..18..10,6 | } 0h..0′..1,1″ | |||
| Longitude by T Keeper at the same time | 4..32..22 = | 0..18..9,5 | ||||
| Longitude by Observation more than T Keeper | + 0..00.. 1″ | |||||
| Longitude by Observn less than T Keeper on the 16th March | – 0..10..31 | |||||
| Time Keeper error since the 16th March | = 0..10..48 in Longd | |||||
| Time Keeper fast for mean Time Greenwich 16th March last | 0..0..42,4 | |||||
| The Time Keeper error in 59 days that it has lost | = 0..0..43,5 | |||||