TABLE 7. Average Aisle Seat Risk Duration With Blocked Middle Seats and 1 m Aisle Social Distancing (in Seconds).

Boarding method	Aisle social distancing: 1 m
	S1	S2	S3	S4	S5	S6	S7
Random	4699	4522	4223	3972	3696	3413	3076
Adapted Back-to-front	858	781	691	620	565	522	500
Adapted Back-to-front mix	2143	1952	1786	1618	1466	1336	1190
WilMA-Back-to-front	455	397	348	302	260	229	199
WilMA-Spread	1592	1498	1403	1313	1192	1074	941
WilMA-Spread-Back-to-front	455	401	349	302	263	229	198
Reverse pyramid - Gradual	316	271	232	196	166	141	121
Reverse pyramid - Steep	317	271	230	191	166	142	122
Reverse pyramid - Spread	316	273	230	196	165	142	121