Table 1.

Mobile Service Characteristics at Selected Sites

						SKYPE		SPEED (KBPS)
SITE	TYPE	DATE	SIGNAL TYPE	STRENGTH (BARS)	VIDEO	AUDIO	VIDEO	UPLOAD	DOWNLOAD
A		August 29, 2010	None
B		July 19, 2008	2G	4	No	Barely	No	23	45
B		September 9, 2010	2G	4	No	No		79	70
C	Clinic	July 19, 2008	2G	4	No	Does not send	No	31	73
C	Clinic	September 9, 2010	2G	4	No	Yes		95	42
D	Clinic	July 19, 2008	2G	3	Very low bandwidth	Barely	No	31	45
E		July 20, 2008	2G	4	No		No
F	Clinic	July 21, 2008	2G	4	Yes	Poor	No	33	55
G	Clinic	July 21, 2008	2G	Unreliable	No	No	No	0	0
H	Clinic	July 22, 2008	2G	3		No	No	16	27
I	Clinic	September 4, 2010	2G	4	No	No			28
J		September 6, 2010	2G	4	No				250
K	Hospital	September 9, 2010	2G	3	No	No		45
L	Hospital	September 10, 2010	2G	4	No	No		35
M	Hospital	September 10, 2010	2G	4	No	No		100	67
N		September 10, 2010	2G	4	No	No
O	Hospital	July 16, 2008	3G	4	Yes	Yes	Yes	230	230
O	Hospital	September 10, 2010	3G	4	Yes	Yes		352
P	Hospital	July 18, 2008	3G	4	Yes	X	X	X	X
P	Hospital	September 10, 2010	3G	4	Yes	Yes		312	460
Q		August 27, 2010	3G	3	Yes	Yes		370	400
R		September 1, 2010	3G	3	Yes	Yes		386	400
S		September 4, 2010	3G	4	Yes	Yes			740
T	Hospital	September 9, 2010	3G	4	Yes	Yes		333
U	United Kingdom	September 17, 2010	3G	4	Yes	Yes		222
V	United Kingdom	September 17, 2010	3G	4	Yes	Yes		667
2G
Mean								44	64
SD								33	65
3G
Mean								331	446
SD								56	185

2G, second generation; 3G, third generation; SD, standard deviation.