sample input file
F_L  1.0
SIZE  10
F_W  0.05
F_HT 2.0 
X  2.5
Y  0.5
k_f  10
k_m  0.01
phi_f  1
phi_m  0.01
alpha_f  1
alpha_m  0.3
P_m  2500
P_f1  2500
P_f2 3000
sigma_hmin 2000
sigma_hmax 3000
sigma_v 3500
E_m 4000000
E_f 200000
PR_m 0.2
PR_f 0.2
cf 1e-6