gistfile1.txt

@1: #DEB147; 
@2: #D68A5A; 
@3: #D5796B;  
@4: #BE6291;  
@5: #93639E; 
@nodata:#a4abaf;  

#tmsch1[all_gradrate09 < .6][all_gradrate09 > 0]::data {
    [all_gradrate09 < .6][all_gradrate09 > 0] {marker-fill: @2;}
    marker-height:1;
    [zoom > 5]{marker-height:2;}
    [zoom = 8]{marker-height:4;}
    [zoom = 9]{marker-height:5;}
    [zoom = 10]{marker-height:6;}
    [zoom = 11]{marker-height:7;}
    [zoom = 12]{marker-height:8;}  
    marker-opacity:.9;
    marker-line-opacity:0;
    marker-allow-overlap:true; 
}