Why ListDensityPlot does not work?

I cannot figure how this ListDensityPlot function works.

From the site:

     ListDensityPlot[{{x1,y1,f1},{x2,y2,f2},…}]


I write

    ListDensityPlot[{{24.5, 20.5, 0.109}, {25.5, 20.5, 0.198}, {26.5,
20.5, 0.338}, {27.5, 20.5, 0.53}, {28.5, 20.5, 0.82}, {29.5, 20.5,
1.2}}]


and it just gives a completely white plot. Thank you for your help!

• Add option DataRange -> All – user18792 Dec 11 '18 at 17:26
• Thanks! Now the plot is not white but it has not sense. On the X-axis it goes from 1.0 to 3.0 while on Y-axis it goes from 1 to 6. It should go, approximatively, from 24 to 30 on the X-axis and from 20 to 21 on the Y-axis no? If I add PlotRange -> All and PlotLegends -> Automatic the problem is not solved. Moreover, the legend (that from my understanding should regards the value of f(x,y)) goes from 0 to 25 while it should go to a maximum of roughly 1.3, no? – Knomes Dec 11 '18 at 17:43

ListDensityPlot[{{24.5, 20.5, 0.109}, {25.5, 20.5, 0.198}, {26.5,