From: roger@hayter.org 
  
 On 11 Aug 2025 at 21:23:27 BST, "Mark Goodge" 
  wrote: 
  
 > 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 
  
 Or in SI notation 82m AOD. I really don't like the hybrid of a unit and an 
 acronym, even if the water companies do. 
  
  
 -- 
  
 Roger Hayter 
  
 --- SoupGate-Win32 v1.05 
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