Nature Fig3

Deciphering the Metonic and Olympiad dials. a, Representative CT slice of fragment B, showing part of the Metonic dial. The scales are 7 mm wide and the text 1.7 mm high (Supplementary Notes 3). b, Text in red was traced from the CT—just enough being deciphered to discover all the month names; text in blue is reconstructed. c, CT slice through fragment B, showing the Olympiad dial. LΔ and ΝΕΜΕΑ can be seen faintly on the left-hand side. d, The four sectors of the Olympiad dial are labelled LΑ, LΒ, LΓ and LΔ—years 1, 2, 3 and 4. Outside are the Panhellenic Games: year 1: ΙΣΘΜΙΑ, ΟΛΥΜΠΙΑ; year 2: ΝΕΜΕΑ, ΝΑΑ; year 3: ΙΣΘΜΙΑ, ΠΥΘΙΑ; and year 4: ΝΕΜΕΑ, and undeciphered text.