Fix column name misalignment bug in `as_result_df` #827

All 195 tests pass in 1m 27s

      1 files     24 suites 1m 27s ⏱️
  195 tests   195 ✔️ 0 💤 0 ❌
1 491 runs 1 491 ✔️ 0 💤 0 ❌

Results for commit eabf02a.