#!/bin/ksh
#Yonkers temperature is average of Central Park and White Plains.

lynx -source \
http://forecast.weather.gov/obslocal.php\
'?warnzone=NYZ071&local_place=Yonkers+NY&zoneid=EST&offset=18000' |

tr '[A-Z]' '[a-z]' |

#Insert a newline immediately after each </TR>
#to ensure that each row of the HTML table is on a separate line.
sed 's:</tr>:&\
:' |

egrep 'central park|white plains' |

#Change every <TD> or </TD> tag to a @.
sed 's:</*td[^>]*>:@:g' |

awk -F@ '
	BEGIN {sum = 0}
	      {sum = sum + $8}
	END   {print sum / NR}
'