Corrected time interval and data.

Made a mistake on earlier counts and included incomplete data sets; not 100% reported.

I am unable to access values on WBM for this site (https://www.cdc.gov/nchs/nvss/vsrr/covid19/index.htm) which would have made everything much easier.

These updates to Fluview Interactive are delayed.

https://gis.cdc.gov/grasp/fluview/mortality.html