Bartosiewicz Clinic uses client-visits as its measure of activity. During January, the clinic budgeted for 3,800 client-visits, but its actual level of activity was 3,780 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:

	Fixed element per month	Variable element per client-visit
Revenue	$ 0	$ 35.80
Personnel expenses	$ 27,800	$ 11.80
Medical supplies	1,800	5.80
Occupancy expenses	10,800	1.00
Administrative expenses	6,800	0.40
Total expenses	$ 47,200	$ 19.00

Actual results for January:

Revenue	$ 124,730
Personnel expenses	$ 71,000
Medical supplies	$ 22,716
Occupancy expenses	$ 14,680
Administrative expenses	$ 8,185

The activity variance for net operating income in January would be closest to: