Bartosiewicz Clinic uses client-visits as its measure of activity. During January, the clinic budgeted for 3,500 client-visits, but its actual level of activity was 3,480 client-visits. The clinic has provided the following data concerning the formulas used in its budgeting and its actual results for January: Data used in budgeting: Revenue Personnel expenses Medical supplies Occupancy expenses Administrative expenses Total expenses Fixed element Variable element per month per client-visit $ 0 $ 35.50 $ 27,500 $ 11.50 1,500 5.50 10,500 1.00 6,500 0.10 $ 46,000 $ 18.10 Actual results for January Revenue Personnel expenses Medical supplies Occupancy expenses Administrative expenses $ 124,700 $ 72,050 $ 22,710 $ 14,650 $ 8,155 The overall revenue and spending variance fue, the variance for net operating income in the revenue and spending variance column on the flexible budget performance report for January would be closest to