pray help a poor wanderer with syntax

I am populating a table with some statistics, e.g. 
    $tables{$day}->{$state} = \[$deathsToday, $m, $double, $intercept,
+ $corr];

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These are grouped in my mind as an array, so that's why I used the anonymous array above. So then it gets used later, viz 
    foreach my $point ( @${$tables{$day}->{$state}} ) {
      print $fh "\t", $point;

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After time, I want to add a feature, for which I need to access just the first element. It seems like it should be something like ${$tables{$day}->{confirmed}}[0]; but that isn't right. dump $tables{$day} helpfully offers 
{
  confirmed => \[1, 0.334638642561918, 2, 0.873307778517249, 0.8539438
+57158699],
  deaths    => \[],
}

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(This is a covid visualization thing.) I could of course convert that five element array to a hash (and actually, just because it comes back from a linear regression as an array doesn't mean it has to stay that way) but I'd like to understand the syntax. Pray, give insight to this lost soul?

In reply to accessing an anonymous array by WoodyWeaver

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