#!/usr/bin/env perl
use strict;
use warnings;
use Scalar::Util::Numeric qw(isfloat);
use Data::Dumper;

my @data;
push @data, grep { isfloat($_) } split /\s+/ while <DATA>;

print Dumper @data;


__DATA__
360.000 -0.000100033 -1.76122e-05 -9.89111e-05 -1.9003e-05
640.000 -4.54467e-05 9.13758e-05 -4.50576e-05 9.04804e-05
123 V.1234