Figure 5

Required numbers and possible positions of far-UVC lamps for typical dining situations: (a) one lamp for a single diner; (b) two lamps for two diners sitting face to face; (c) two lamps for two diners sitting on the same side; (d) three lamps for three diners; (e) one lamp for four diners; (f) two lamps for four diners; (g) three lamps for four diners; and (h) four lamps for four diners.