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$ curl -s 'https://nationalmap.gov/epqs/pqs.php?units=Meters&output=js
+on&x=-83.65&y=41.37' | jq '.USGS_Elevation_Point_Query_Service.Elevat
+ion_Query.Elevation'
212.77
$

2020/06/23 15:26:07 INFO ./5.2.elev.pl 
2020/06/23 15:26:07 INFO {
  "USGS_Elevation_Point_Query_Service" => {
...
2020/06/23 15:26:08 INFO https://api.weather.gov/gridpoints/CLE/16,52 
2020/06/23 15:26:08 INFO ============== 
2020/06/23 15:26:08 INFO 213.0552 wmoUnit:m

#!/usr/bin/env perl

use strict;
...
$logger->info( $elev2 . ' '. $unit);

__END__