" 

 But  is only 1 full turn in terms of radians. When you say turns you mean full revolutions, so 1 full turn is just that: 1. Radians divided by tau is equal to the number of full turns, maybe we should put them together? Hence: 
 {|class = wikitable 
 ! Units !! colspan=10 | Values 
 |- valign=""top"" 
 |style = ""background:#f2f2f2"" | Turns or Radians divided by     
 |style = ""width:3em; text-align:center"" | 0 
 |style = ""width:3em; text-align:center"" | 1/12 
 |style = ""width:3em; text-align:center"" | 1/10 
 |style = ""width:3em; text-align:center"" | 1/8 
 |style = ""width:3em; text-align:center"" | 1/6 
 |style = ""width:3em; text-align:center"" | 1/5 
 |style = ""width:3em; text-align:center"" | 1/4 
 |style = ""width:3em; text-align:center"" | 1/2 
 |style = ""width:3em; text-align:center"" | 3/4 
 |style = ""width:3em; text-align:center"" | 1 
 |- valign=""top"" 
 |style = ""background:#f2f2f2"" | Degrees (°)    
 |style = ""width:3em; text-align:center"" | 0 
 |style = ""width:3em; text-align:center"" | 30 
 |style = ""width:3em; text-align:center"" | 36 
 |style = ""width:3em; text-align:center"" | 45 
 |style = ""width:3em; text-align:center"" | 60 
 |style = ""width:3em; text-align:center"" | 72 
 |style = ""width:3em; text-align:center"" | 90 
 |style = ""width:3em; text-align:center"" | 180 
 |style = ""width:3em; text-align:center"" | 270 
 |style = ""width:3em; text-align:center"" | 360 
 |- valign=""top"" 
 |style = ""background:#f2f2f2"" | Radians 
 |style = ""text-align:center"" | 0 
 |style = ""text-align:center"" |  
 |style = ""text-align:center"" |  
 |style = ""text-align:center"" |  
 |style = ""text-align:center"" |  
 |style = ""text-align:center"" |  
 |style = ""text-align:center"" |  
 |style = ""text-align:center"" |  
 |style = ""text-align:center"" |  
 |style = ""text-align:center"" |  
 |- valign=""top"" 
 |style = ""background:#f2f2f2"" | Grads (g) 
 |style = ""text-align:center"" | 0 
 |style = ""text-align:center"" | 33⅓ 
 |style = ""text-align:center"" | 40 
 |style = ""text-align:center"" | 50 
 |style = ""text-align:center"" | 66⅔ 
 |style = ""text-align:center"" | 80 
 |style = ""text-align:center"" | 100 
 |style = ""text-align:center"" | 200 
 |style = ""text-align:center"" | 300 
 |style = ""text-align:center"" | 400 
 |}"