Tennies Clinic uses client-visits as its measure of activity. During November, the clinic budgeted for 4,200 client-visits, but its actual level of activity was 4,190 client-visits. The clinic has provided the following data concerning the formulas used in its budgeting and its actual results for November:

Data used in budgeting:

	Fixed element per month	Variable element per client-visit
Revenue	$ 0	$ 37.20
Personnel expenses	$ 31,300	$ 12.20
Medical supplies	2,100	7.60
Occupancy expenses	9,400	3.70
Administrative expenses	7,700	0.20
Total expenses	$ 50,500	$ 23.70

Actual results for November:

Revenue	$ 156,078
Personnel expenses	$ 82,376
Medical supplies	$ 34,788
Occupancy expenses	$ 24,405
Administrative expenses	$ 8,291

The activity variance for personnel expenses in November would be closest to: