Table 3: Wind statistics at Dome C and South Pole over the period of time covered by the balloon launches.

	Dome C
	ground	trop.-330 mB	200 mB-11 km	50 mB
N data	8741	145	123	75
Mean w speed	3.6	12.2	7.4	6.6
Med. w speed	3.5	10.7	5.9	4
W speed std dev	2.5	7.2	5.3	6.1
Max w speed	10.5	41	25.7	34.4
Mean direc.	180.3	187.6	211.6	193
Direc. std dev	74.4	92.6	90.8	121.6
	South Pole
	ground	trop.-330 mB	200 mB-11 km	50 mB
N data	668	666	662	621
Mean w speed	4.7	10	7	9.2
Med. w speed	4.5	8.1	5.7	4.7
W speed std dev	2	7	4.9	9.6
Max w speed	13	47.8	35.4	56
Mean direc.	105.9	213.7	203.6	155.3
Direc. std dev	112.3	113.3	114.4	100.4