The sample data below can be used to demonstrate a bubble chart. The data is presented as a list of tuples, with each tuple representing one bubble. Each tuple contains four values, including the x-axis value, y-axis value, bubble size and bubble color. 

[(0.5, 3.5, 7, "#00568f"),
 (2.2, 3.3, 4, "#ad3c48"),
 (4, 4.4, 6, "#0a8345"),
 (2.8, 1.7, 8, "#b75d88"),
 (1.2, 0.2, 3, "#908fc2"),
 (7, 0.3, 5, "#ffa900")]
Crea dati di esempio per dimostrare un grafico a bolle