Tomographic imaging
Gordova, AKGordova, AK60.50214.53
Gakona, AKGakona, AK62.40214.84
Delta Junction, AKDelta Junction, AK63.90214.76
Fort Yukon, AKFort Yukon, AK66.56214.78
Arctic Village, AKArctic Village, AK68.12214.44
Kaktovik, AKKaktovik, AK70.13216.36
KILKilpisjärvi69.0220.86
KIRKiruna67.8420.41
LULLulea65.5822.17
KOKKokkola63.8323.06
NURNurmijärvi60.5124.65
MoscowMoscow55.6737.63
BabaevoBabaevo59.4135.92
KemKem64.9534.57
VerkhnetulomskyVerkhnetulomsky68.5931.76
NikelNikel69.431.01
BarentsburgBarentsburg78.114.25
NALNy-Ålesund78.9111.94
LYRLongyerbyen78.2215.83
BjornoyaBjornoya74.5219.05
TROTromso69.5819.22
GPS receivers
HUSAThe Husafel site64.67-21.03