Table A2.

Coefficients of the two-variable fit function expressing the magnetic force as a function of the gap and the vertical displacement.

$a_{00}$	1.376 × 101	$a_{03}$	1.839 × 10−1	$a_{23}$	2.853 × 10−3	$a_{06}$	2.071 × 10−6
$a_{10}$	−6.894 × 100	$a_{40}$	1.033 × 10−2	$a_{14}$	1.291 × 10−4	$a_{70}$	−6.909 × 10−8
$a_{01}$	1.651 × 101	$a_{31}$	−3.492 × 10−2	$a_{05}$	3.570 × 10−4	$a_{61}$	2.117 × 10−7
$a_{20}$	1.428 × 100	$a_{22}$	3.846 × 10−3	$a_{60}$	8.039 × 10−6	$a_{52}$	−7.301 × 10−8
$a_{11}$	−4.414 × 100	$a_{13}$	−3.739 × 10−2	$a_{51}$	−2.595 × 10−5	$a_{43}$	1.198 × 10−6
$a_{02}$	1.139 × 10−1	$a_{04}$	−8.264 × 10−4	$a_{42}$	6.434 × 10−6	$a_{34}$	1.148 × 10−7
$a_{30}$	−1.591 × 10−1	$a_{50}$	−3.916 × 10−4	$a_{33}$	−9.604 × 10−5	$a_{25}$	7.225 × 10−7
$a_{21}$	5.290 × 10−1	$a_{41}$	1.307 × 10−3	$a_{24}$	−6.801 × 10−6	$a_{16}$	−6.097 × 10−8
$a_{12}$	−3.301 × 10−2	$a_{32}$	−2.234 × 10−4	$a_{15}$	−3.120 × 10−5	$a_{07}$	−3.415 × 10−7