StatisticsIt explains how a value is calculated for a single record and how the total trip is calculated. Here is an example day:
1. Logbook recordsNumber of log entries on the affected day or the whole trip
2. Ø speed (chart)Graphical representation of the speed course spread over the day or the whole trip.
Track basedSource: position / time
The light blue graph shows the speed of the GPS detected. (So calculated each time with the distance between two consecutive positions divided by the time between these two positions.)
Log basedSource: Speed (SOG)
The dark blue graph shows the chart of the speed stored in the logbook record. (So the speed at the time when the logbook record was created was measured via GPS, or later adjusted manually.
3. Ø log entries (logs)Source: Speed (SOG)
The average speed on the day or the whole trip calculated using the entries in the logbook record, see 2. log based
4. Ø distance / time (track)Source: position / time
The average speed on the affected day or the whole trip is calculated from the GPS track, see 2. track based
5. Max log entries (logs)Source: Speed (SOG)
The maximum speed on the affected day or the whole trip is calculated from the entries in the logbook record, see 2. Log based
6. Max log entries (track)Source: position / time
The maximum speed on the affected day or the whole trip is calculated based on the GPS track, see 2. track based
7. Barometric pressure curveSource: air pressure
The air pressure profile from the logbook entries. For newer devices reliable and highly accurate from the device itself, otherwise from the Internet.
8. Graphic 1Graphical representation what is described under point 10.
9. Graphic 2Graphical representation which is described under point 11 and 12.
10. covered distanceSource: Position
Here the distance traveled is displayed either for the affected day or for the entire trip. This distance is calculated on the basis of the distances of the individual entries and positions in the logbook.
Distribution of sail / engineSource: Status
Furthermore, it is also distinguished in which status (engine, sail, anchor, mooring, motor sailing) you have covered the distance. Motor sailing is calculated as travel under engine. Normally, no route should be completed in the status anchor or moored. If this is the case, this will also be displayed as a warning above a limit of approx. 0.3 nautical miles in red.
This also explains why it is essential to keep the status (see instructions) up to date while driving. If this was forgotten, you can also update the status later for multiple records at once.
Continuous log (chip log)Source: Chip log
The daily statistics are calculated (read from top to bottom):
|Is there at least one record with chip log value > 0 on this day?|
|Is there a record on any day before?||Nothing is displayed in the statistics|
|Show the last value of today as the overall log, and the difference to the last record on the previous day (or even older) as the difference in sense from the distance traveled.||Are there at least two records today?|
|Show the last value of today with chip log value as the overall log, and display the difference to the first record with chip log value from the same day in the sense of distance traveled.||Nothing is displayed in the statistics|
The total trip statistics are calculated (read from top to bottom):
|Are there at least two record with chip log value > 0?|
|Show the last value of the trip as the overall log, and display the difference to the first record with Loggestand from the trip in sense of the distance traveled.||Nothing is displayed in the statistics.|
11. HoursSource: time
Here the elapsed time is displayed either for the affected day or for the whole trip. This time is calculated on the basis of the times of the individual records in the logbook. If there are several days, the first day starts with the first record and the last one ends with the last one. So, for example 08:00 to 24:00 = 16h. If a day is between two other days, it is always 24 hours long. If there is only one day, it goes from the first to the last record.
Distribution Sail / EngineSource: Status Furthermore, it is also distinguished in which status (engine, sail, motor sailing) the time has elapsed.
12. Hours without movementSource: Status / Time
Like 11. only for the status anchor + moored
13. Operating hours of the enginesSource: Engine operating hours
You can enter the operating hours for three engines. However, this value very likely differs from from the calculation of the engine time based on the status (as described in 10 and 11), because you can adjust this value by hand and this value is designed to consider also operation hours without propulsion (e.g. charging batteries during anchorage). More details on this feature is described on the engine page. There are two settings how the engine operating hours are calculated. (Adjustable in the settings)
differenceWas called until version 2.34 "Log". Here's the idea to write down the value of the engine operating hour clock installed on the ship and then display the difference. So, for example record on day 1 with 1,024.5 h for engine A, then another record on day 2 with 1028.5 h. The statistic shows 4h for day two.
So if a day is calculated, it will first be checked how many entries have an record for motor A (the same applies to the other motors of course). Then there are two cases:
11. If it is just an record, it will try to find at least one record on an earlier day to calculate the difference. If none is found, nothing is displayed.
2. There are several entries on the day, then the difference from the first and the last is calculated and displayed.
In addition, an error message is displayed in the statistics when e.g. the newer record has a higher value than the older one. The same calculation applies to the whole trip.