This is the new graph, with the new value for April at about 5.99 tornadoes/day. This is very close to the value from UStornadoes.com web site, which is 5.93 tornadoes/day, if you just divide their number by 30. Also, their value for June is 7.6 tornadoes/day, vs. my calculation at 6.8 tornadoes/day. So that is a kind of interesting deviation from the long-term dataset.