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Legend (National/Nitrogen_state_and_trends)

River water quality - total nitrogen - trends (2)
Very likely improving Very likely improving
Likely improving Likely improving
Indeterminate Indeterminate
Likely worsening Likely worsening
Very likely worsening Very likely worsening
River water quality - total nitrogen - trends (3)
Very likely improving Very likely improving
Likely improving Likely improving
Indeterminate Indeterminate
Likely worsening Likely worsening
Very likely worsening Very likely worsening
River water quality - total nitrogen - trends (4)
Very likely improving Very likely improving
Likely improving Likely improving
Indeterminate Indeterminate
Likely worsening Likely worsening
Very likely worsening Very likely worsening
River water quality - nitrate-nitrogen - trends (6)
Very likely improving Very likely improving
Likely improving Likely improving
Indeterminate Indeterminate
Likely worsening Likely worsening
Very likely worsening Very likely worsening
River water quality - nitrate-nitrogen - trends (7)
Very likely improving Very likely improving
Likely improving Likely improving
Indeterminate Indeterminate
Likely worsening Likely worsening
Very likely worsening Very likely worsening
River water quality - nitrate-nitrogen - trends (8)
Very likely improving Very likely improving
Likely improving Likely improving
Indeterminate Indeterminate
Likely worsening Likely worsening
Very likely worsening Very likely worsening
River water quality - ammoniacal nitrogen - trends (10)
Very likely improving Very likely improving
Likely improving Likely improving
Indeterminate Indeterminate
Likely worsening Likely worsening
Very likely worsening Very likely worsening
River water quality - ammoniacal nitrogen - trends (11)
Very likely improving Very likely improving
Likely improving Likely improving
Indeterminate Indeterminate
Likely worsening Likely worsening
Very likely worsening Very likely worsening
River water quality - ammoniacal nitrogen - trends (12)
Very likely improving Very likely improving
Likely improving Likely improving
Indeterminate Indeterminate
Likely worsening Likely worsening
Very likely worsening Very likely worsening
River water quality - total nitrogen - state (13)
<0.230 <0.230
0.230 - 0.515 0.230 - 0.515
0.515 - 1.100 0.515 - 1.100
>1.100 >1.100
River water quality - nitrate-nitrogen - state (14)
<0.071 <0.071
0.071 - 0.285 0.071 - 0.285
0.285 - 0.760 0.285 - 0.760
>0.760 >0.760
River water quality - ammoniacal nitrogen - state (15)
<0.004 <0.004
0.004 - 0.008 0.004 - 0.008
0.008 - 0.014 0.008 - 0.014
>0.014 >0.014