https://ftp-wpc.ncep.noaa.gov/grid/qpf/20240404/?C=N;O=A
Index of /grid/qpf/20240404
index ofgridqpf
https://ftp-wpc.ncep.noaa.gov/coded_sfc/20240404/?C=S;O=A
Index of /coded_sfc/20240404
index ofcodedsfc
https://ftp-wpc.ncep.noaa.gov/grid/qpf/20240404/?C=S;O=D
Index of /grid/qpf/20240404
index ofgridqpf