Hi and dust maps for two fields: SP (top)and AG (bottom). The first two maps on the left show the Hi components (Local and IVC for SP, IVC and HVC for AG), the third maps show the 857 GHz emission associated with Hi () and the maps on the right side show the HFI 857 GHz maps. Those HFI maps have been convolved by the GBT beam to allow a better comparison by eye. Hi maps are given in units of 10²⁰ atomscm^-2. Note the correlation of the dust emission with the different Hi velocity components and its variation from field to field.