From: usenet@listmail.good-stuff.co.uk 
  
 On Mon, 11 Aug 2025 17:32:22 +0100, Jeff Layman  
 wrote: 
  
 >On 10/08/2025 12:41, GB wrote: 
  
 >> "However our water comes from aquifers under the South Downs, and they 
 >> remain over 82% aMOD." 
 > 
 >Just to repeat for clarity I should have put mAOD, not aMOD. 
 > 
 >> Just to clarify, that % sign doesn't mean anything?  It's actually 
 >> referring to metres above the datum line (perhaps sea level?). 
 > 
 >I've no idea what the % means. The level relates to the average at 
 >Newlyn in Cornwall. 
  
 Why are you inserting a percent sign? It's not on any of the pages you cite 
 as sources. The figures given are actual numbers, in mAOD - that is, metres 
 above ordnance datum. There's no such value as 82% mAOD. The value, in this 
 case, is 82 mAOD. 
  
 Mark 
  
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