Basketball attendance across the PAC-12 conference has been down with the exception of Arizona.  Below I listed the school, their arena capacity and the percentage of attendance.
Arizona        14,644   96%
Washington   9,268   76%
UCLA           13,800  67%
Colorado      11,064  60%
ASU             14,198  57%
Oregon        12,364  52%
Stanford        7,233  47%
Utah            15,000  44%
USC            10,258  39%
OSU              9,604  38%
WSU            11,671  30%
California     11,858  18%