However, these were initially rejected as unreasonable by data quality control algorithms (they were filtered out as errors since the values were unexpectedly low); the ozone hole was detected only in satellite data when the raw data was reprocessed following evidence of ozone depletion in in situ observations.
Namun, hal ini awalnya ditolak karena tidak masuk akal oleh algoritme kontrol kualitas data (mereka disaring sebagai kesalahan karena nilainya tidak terduga rendah); lubang ozon hanya terdeteksi dalam data satelit saat data mentah diproses ulang setelah bukti penipisan ozon dalam observasi in situ.