OptionalautocatAx, dateAx: read dates as dates.
OptionalaxOptionalbaseOptionalcrossThe axId of the axis this one crosses.
OptionalcrossvalAx: whether the crossing axis is drawn between categories or through them.
OptionalcrossesOptionalcrossesOptionaldeleteOptionaldispOptionallblOptionallblOptionalmajorOptionalmajorOptionalmajorOptionalmajorOptionalminorOptionalminorOptionalminorOptionalminorOptionalnoOptionalnumOptionalspOptionaltickOptionaltickOptionaltickOptionaltitleOptionaltxOptionalunknown
c:catAx,c:valAx,c:dateAx,c:serAx, and a 2016 chart'scx:axis, which states no position and no crossing axis.