The manuscript 'How to Build an Optical Filter with an Atomic Vapor Cell' introduces two filter types - the Doppler and the Faraday filter. The Doppler filter acts barely on the absorption of resonant light. In the Faraday case, linear polarized light undergoes a magnetically induced rotation close to interatomic transition. The uploaded files contain two complete sets of data - one for the Doppler and one for the Faraday filter.