diff --git a/notebooks/calibration/insufficient-calibration_11000.png b/notebooks/calibration/insufficient-calibration_11000.png deleted file mode 100644 index 348e2b04b..000000000 Binary files a/notebooks/calibration/insufficient-calibration_11000.png and /dev/null differ diff --git a/notebooks/calibration/insufficient-calibration_21000.png b/notebooks/calibration/insufficient-calibration_21000.png deleted file mode 100644 index da5459c00..000000000 Binary files a/notebooks/calibration/insufficient-calibration_21000.png and /dev/null differ diff --git a/notebooks/calibration/insufficient-calibration_national.png b/notebooks/calibration/insufficient-calibration_national.png deleted file mode 100644 index f79c29959..000000000 Binary files a/notebooks/calibration/insufficient-calibration_national.png and /dev/null differ diff --git a/notebooks/calibration/summer-bump_11000.png b/notebooks/calibration/summer-bump_11000.png deleted file mode 100644 index 1aad5f362..000000000 Binary files a/notebooks/calibration/summer-bump_11000.png and /dev/null differ diff --git a/notebooks/calibration/summer-bump_21000.png b/notebooks/calibration/summer-bump_21000.png deleted file mode 100644 index 402afc088..000000000 Binary files a/notebooks/calibration/summer-bump_21000.png and /dev/null differ diff --git a/notebooks/calibration/summer-bump_national.png b/notebooks/calibration/summer-bump_national.png deleted file mode 100644 index 014286a37..000000000 Binary files a/notebooks/calibration/summer-bump_national.png and /dev/null differ