<?php
$row = ['address' => 1, 'raw' => '1'];
$numeric = [33000, -1000, 25000];
if (count($numeric) >= 3) {
    $row += [
        'voltage_mv' => $numeric[0],
        'current_ma' => $numeric[1],
        'temperature_mc' => $numeric[2],
    ];
}
print_r($row);
