Overall, sea levels are rising by about 3mm (0.12 inches) per year.
“If present trends continue, sea level is likely to be significantly higher than levels projected by the IPCC”
Eric Rignot – Nasa JPL
http://www.bbc.co.uk/news/science-environment-12687272
And three inches is larger than six inches.
http://www.realclimate.org/index.php/archives/2007/03/the-ipcc-sea-level-numbers/
Sea level rise has slowed over the last five years to the low end of B1
http://sealevel.colorado.edu/current/sl_noib_global.txt
http://www.youtube.com/watch?v=01Nnxw67vIU&feature=player_embedded
Like a man discribing length to his girlfirend.
Each range is double of the lowest. There is so much overlap there are not multiple estimates, there is one. They are non-falsifiable: whatever happens is acceptable by whatever model you choose.
Nice work if you can get paid for it.