dischargeevents.php
	-------------------

	DONE - Add a highlight colour for the date roundel that was last viewed (e.g. $_GET['date'] supplied) and leave the today roundel as the red one. 

	DONE - Hide the .ifa_today formatting on 1st of month when navigated to by the forward/back buttons.

	DONE - Check the date roundel highlights in portrait view.
		

	britmonitor.php/t_britmonitor.php
	---------------------------------

	DONE - Sort X axis line at lefthand end (in t_britmonitor.php).
		
	- Convert Rainfall & River level data tables to DST when appropriate. 
		DONE - Rainfall 
			30/7/26 = 0.13mm @ 7:00GMT
			26/7/26 = 0.07mm @ 7:00GMT
		DONE - River Level
			30/7/26 = 0.42m @ 10:15:00GMT
		- Sewage discharge

	DONE -	Replace current version with t_britmonitor.php when all done.


	brithistory.php
	---------------

	DONE - Show "monitoring offline" as yellow background.
	
	
	dischargedetails.php, rainfalldetails.php, riverleveldetails.php 
	----------------------------------------------------------------
	
		- Convert times to DST when appropriate or label as GMT if always GMT.
		
			DONE - rainfalldetails.php
			DONE - riverleveldetails.php
			DONE - dischargedetails.php