javascript - Change radius for a single point on Heatmap? -

here how create heatmap layer in google maps api:

var data = [         {location: new google.maps.latlng(59.4072, 24.7053),weight:0.8},         {location: new google.maps.latlng(59.4372, 24.7473),weight: 1},         {location: new google.maps.latlng(59.4372, 24.7493),weight:0.8},         {location: new google.maps.latlng(59.483428, 24.841709),weight: 0.6},         {location: new google.maps.latlng(59.483256, 24.846666),weight: 0.2},         {location: new google.maps.latlng(59.409425, 27.278345),weight: 0.3}     ];  heatmap = new google.maps.visualization.heatmaplayer({     data: data,     radius: 10 }); 

as can see, have specify radius in heatmap config.
but how can specify different radius single source (point) on heatmap?