Ct_t12 = 1.70e16*1.6e-19*1.08/1e18
Cb_t12 = 1.03e16*1.6e-19*1.08/1e18
WL_t12 = 1.2/3

data = loadtxt('./300mK_0TFullMap_Si15V_10nA_1002_M1u', skiprows = 1)

x = data[:, 0]
y = data[:, 1]
z = data[:, 6]/data[:, 5]/10/1000*WL_t12
mask = x > -1.7


Vbg = numpy.unique(y[mask], return_counts=False)
Vtg = numpy.unique(x[mask], return_counts=False)

Rxx = reshape(z[mask], (Vbg.shape[0], Vtg.shape[0]))