Data frame containing columns “age”, “intercept”, “lmxf”, “e0f”, “e0f2”, and “gap”.
Rows correspond to age groups. The values are estimates of the following regression
$$\log_{10} mx^M = \beta_0 + \beta_1\log_{10} mx^F + \beta_2 e_0^F + \beta_3 (e_0^F)^2 + \beta_4(e_0^F - e_0^M)$$
The order of the columns starting with intercept corresponds to the order of the coefficients in the above equation.