How to read Pricipitation/ time ?

Hi there !
Please, in the screen picture I add, how to read the numbers of Pricipitation ?
There are 2 values of Pricipitation : 20.7/ 3 hours and 69.1 / ??? hours.
Please, help to understand those values .
Thank you so much !

Andre Rovigatti
It’s simple - the map shows the precipitation total for 3 hours, while the graph shows the total for 24 hours (one day).