Nested ng-repeat, collect checkbox info

HTML

<link rel="stylesheet" href="http://getbootstrap.com/dist/css/bootstrap.min.css">
<div ng-app='MyApp' class='container'>
    <div ng-controller='MyCtrl'>
        <div class='panel panel-default'>
            <table class='table table-striped'>
                <tr>
                    <th width="20%"></th>
                    <th width="10%" ng-repeat="day in persons[0].daysOfWeek">     
                        {{day.name}}
                    </th>
                </tr>
                <tr ng-repeat="person in persons | orderBy: 'secondName'">
                    <td>
                        {{person.firstName + ' ' + person.secondName}}
                    </td>
                    <td ng-repeat="day in person.daysOfWeek">
                        <input type="checkbox" 
                            name="{{day.name}}" 
                            ng-model='day.checked'/>
                    </td>
                </tr>
            </table>
        </div>
        <input class='btn btn-primary' type='button' value='Save info' id='save-info' ng-click='saveInfo()' />
    </div>
</div>

CSS

body { margin-top: 20px; }

table tr td:not(:first-child) { text-align: center; }
table tr th:not(:first-child) { text-align: center; }

JavaScript

var daysOfWeek = [ { name: 'Sun', checked: true }
                  ,{ name: 'Mon', checked: false}
                  ,{ name: 'Tue', checked: '' }
                  ,{ name: 'Wen', checked: '' }
                  ,{ name: 'Thu', checked: '' }
                  ,{ name: 'Fri', checked: '' }
                  ,{ name: 'Sat', checked: ''}];
var persons = 
    [{ firstName: 'Jil', secondName: 'Mith' }
     ,{ firstName: 'Alvin', secondName: 'Zurb' }
     ,{ firstName: 'John', secondName: 'Burt' }
     ,{ firstName: 'Tom', secondName: 'Kurtz' }];

/*persons.forEach(function(person) {
    person.daysOfWeek = daysOfWeek;
});*/
persons.forEach(function(person) {
    person.daysOfWeek = 
        // map - provides callback function for each element of the array
        daysOfWeek.map(function(day) { 
            return angular.extend({}, day)
        }); // extending the day object to a new object 
});

angular.module('MyApp',[]);

function MyCtrl($scope) {
    $scope.persons = persons;
    console.log($scope.persons);
    
    $scope.saveInfo = function() {
        console.log($scope.persons);
    };
}