Additional file 3: of Long-term significant seasonal differences in the numbers of new-borns with an orofacial cleft in the Czech Republic – a retrospective study

Seasonal values of the air temperature in the Czech Republic. Mean monthly air temperatures in °C in the territory of the Czech Republic in three 30-yr periods: 1961–1990 red line, 1971–2000 brown line, 1981–2010 green line. (Adapted according to [58]). (TIF 11858 kb