PUBLICATIONS OF THE ITU-T SECTOR 3. 3.5 Test charts Test Chart No. 4: Black and white facsimile test chart BW01 - (ITU-T Recommendation T.22) (03/93) 302 × 222 mm high contrast bi-level chart containing text in a variety of languages and pitches and various black and white patterns. MEDIA PRICE CHF LANGUAGE ARTICLE ISBN PAGE NBR 12.- E 4530 HQ 1 5.- E 5494 SQ 1 Test Chart No. 5: Continuous tone facsimile test chart CT01 (ITU-T Recommendation T.22) (03/93) 279 × 216 mm gray scale chart containing several strips and patches of various gray scale levels, and two photographs. 75 MEDIA PRICE CHF LANGUAGE ARTICLE ISBN PAGE NBR 26.- E 11941 Test Chart No. 6: 4-colour printing facsimile test chart 4CP01 (ITU-T Recommendation T.23) (04/94) 302 × 222 mm full colour chart printed from 4-colour separation negatives, containing a complete range of patterns, textures, shadings and bright and pastel colours. MEDIA PRICE CHF LANGUAGE ARTICLE ISBN PAGE NBR 9.- E 10465