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$ ./4.am.pl
Subroutine get_logger redefined at ./4.am.pl line 146.
...
INFO: ==============
$

### Elevation with USGS
...
  my $percent2 = percent_error( $d, $miles );
  $logger->info("Percent difference is $percent2");

Running Build test for WYANT/Geo-WebService-Elevation-USGS-0.120.tar.g
+z
t/basic.t .. ok    
t/elev.t ... # Accessing https://nationalmap.gov/epqs/pqs.php