%Beta (Fraction of thunderstorm rain 0-1)
beta=0.125;

%Average annual rainfall in mm
m=1000;

%Rainfall rate in mm/hr
r=10;

p=m/87.6*(0.03*beta*exp(-0.03*r)+0.2*(1-beta)*(exp(-0.258*r)+1.86*exp(-1.63*r)));

%display('');

display('Rainfall rate ')
r
display('will be exceeded ');
p
display(' percent of the time, or')

p/100*365*24

display(' hours per year')