This page will display any sensors which are currently ‘Active’ within the system/cluster.
At the base of the screen, a short message displays information about the current conditions for a given location – including time of last HW/LW, surge/cut value and a meteorological conditions snapshot.
Structure of the “Latest” display
The “Latest” data display can contain different types of data. For this reason there is a separate data table for the data arriving from different sensor types. The column size is controlled automatically based on the content size and screen size. To have some control over the appearance of the table, use the Zoom controls within the web-browser to change the size of the data within the tables (CTRL+ or CTRL- in most browsers).
How is data validated?
So that the “Latest” display table is always showing the most up-to-date and reliable data there are several indicators in place to warn of a drop in data validity.
The two parameters that are monitored for this purpose are “Time” and “Quality”. The indicators operate in an order of priority so that a simple, colour-coded warning system can operate as follows:
Data Validation Scenario
Formatting Applied
Example
0 - Data is valid
Data values coloured Green
2.15
1 - Data has time or quality issues
Data values coloured Amber
2.15
2 - Data has an Age greater than the defined warning interval
Data values coloured Red
2.15
3 - Data has an Age greater than the defined timeout interval
Data blanked out and coloured Red
-.--
The order of priority operates as per the table above, therefore if the latest data has an age which is greater than the “warning interval” it will be coloured red regardless of the presence of a quality warning or not.
Should a quality warning exist an active alert will be in place, changing the colour of the value and providing a brief overview if the mouse is hovered over the value. Furthermore, should one of the telemetry systems fail to provide data within the defined timeout interval an active alert will be generated even if the secondary telemetry system (if fitted) is providing a current and valid data record. This means that it is possible to see a valid data record that has been received via the primary telemetry method with an alert warning that the secondary telemetry method has received no data within the timeout interval.
Menu Options
User can move between different sections of the system. Here, "Latest" has been selected.
Data is displayed in tabular form with all measured paramaters displayed. In this instance, tidal information has been highlighted, so all measured and available tidal values are displayed.
Clicking the station name with a mouse takes the user to a dedicated site, displaying all available paramaters for the site on one screen.
The direction of the arrow can indicate several things, depending on the parameter.
For tides, an upwards pointing arrow indicates that the tide is rising or in the flood stage, whilst a downwards pointing arrow would indicate that the tide is ebbing, or decreasing.
For meteorological parameters such as wind speed, an upwards pointing arrow indicates that the speed is increasing, whilst a downwards pointing arrow indictaes that the speed is decreasing.
For visibility, an upwards pointing arrow indicates that visibility is improving, whilst a downwards pointing arrow indicates that visibility is decreasing.
For surge, an upwards pointing arrow indicates the surge value is increasing, downwards means the surge value is decreasing (i.e. getting closer to predicted)
A timer indicating the system time (time zone dependent on client specifications), with sunset time given as an indication of remaining light for the day.
A timer to indicate when the browser will refresh (usually every 10 seconds). If there is new data to display, this will replace values already in place upon the web page.
