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0 0 <br /> <br />$0 or <br />90 FI'.* <br /> <br /> 0 0 o 0 0 <br /> <br /> Fig. B4. Illuminance measuring points <br /> for baseball and softball, Illuminating <br /> Engineering Society of North America <br /> Sports UghUng-RP-6-88 <br /> <br /> *Fields wiU1 60' basepaltts (for 175' and 200' <br /> fields) are measured in a 20' x 20' grid; 90' <br /> basepa~s (for 300' fields) are measured in <br /> 30' x 30' gdd. <br /> <br /> <br />