added 12 instead of subtracting (pushed the values over to the next day)
added 12 instead of subtracting (pushed the values over to the next day)

lindsaycarr/repgen,zmoore-usgs/repgen,mhines-usgs/repgen,mhines-usgs/repgen,thongsav-usgs/repgen,zmoore-usgs/repgen,lindsaycarr/repgen,USGS-R/repgen,USGS-R/repgen,dpattermann-usgs/repgen,USGS-R/repgen,zmoore-usgs/repgen,dpattermann-usgs/repgen,thongsav-usgs/repgen,thongsav-usgs/repgen,mhines-usgs/repgen,lindsaycarr/repgen,dpattermann-usgs/repgen