Here is the list of precise guesses for April.

edog2007 0.0"
Brad 19.0"
Charlie 21.0"
WSR88D 22.3"
Rich 25.0"
donnellyvj 27.0"
spyboy 28.7"
njgail11 32.1"
treant985 35.4"
RI Swamp Yankee 37.0"
tdb1977 37.4"
PatriciaS 39.3"