# cal-type: potential gradient tensor
# mag-file: data/prism/magz.txt
# obs-file: data/prism/prism
# site-file: data/prism/site.txt
# tet-file: data/prism/prism.1
# x(m) y(m) z(m) Bx(nT) By(nT) Bz(nT)
0 -30 10 9.865885886028991e-11 -635.4085370474012 -212.8584696131117 
0 -27 10 1.642064262341592e-11 -863.7006228546899 -200.1092298959393 
0 -24 10 8.628830983070657e-11 -1189.007890611918 -141.7214283010787 
0 -21 10 1.402611360390438e-11 -1651.9185430748 10.7804521414497 
0 -18 10 5.329070518200751e-11 -2298.687469670971 350.1488193308752 
0 -15 10 3.379341251275036e-11 -3154.96123665952 1043.789659412175 
0 -12 10 2.958699951705057e-11 -4144.066208409731 2353.372919599199 
0 -9 10 -1.398348103975877e-11 -4918.860355559764 4545.864439676197 
0 -6 10 3.393552105990238e-11 -4754.740298994016 7508.666465817756 
0 -3 10 7.503331289626658e-12 -3007.689004117357 10265.02007584552 
0 0 10 -1.762145984685048e-11 -2.535216481192037e-11 11400.03318745997 
0 3 10 -4.6782133722445e-11 3007.689004117304 10265.02007584553 
0 6 10 -4.189359970041551e-11 4754.740298993931 7508.6664658178 
0 9 10 2.034994395216927e-11 4918.860355559778 4545.864439676223 
0 12 10 -6.917844075360335e-11 4144.06620840971 2353.372919599219 
0 15 10 -5.594813501375029e-11 3154.96123665951 1043.789659412193 
0 18 10 -1.117683723350638e-10 2298.687469670903 350.1488193309181 
0 21 10 1.386126768920803e-10 1651.918543074827 10.78045214148585 
0 24 10 -9.367084885525401e-11 1189.007890611897 -141.7214283009721 
0 27 10 1.077893330148072e-11 863.7006228547392 -200.1092298958888 
0 30 10 -1.512248104518221e-10 635.4085370474371 -212.8584696130303