Fig. 1From: Weather patterns and occurrence of epileptic seizuresA-O Examples of upper level weather types from the Table 1 are represented by charts of geopotential height (gpdam) at 500 hPa (black lines) and temperature (°C) at 500 hPa (color shading – 2 degrees interval – values to the right side of the synoptic chart; white lines – isotherms, 5 degrees interval) – source US GFS model (Global Forecast System) - http://www1.wetter3.de/indexBack to article page