<pre>Array
(
    [2020-07-14] => Array
        (
            [0] => Array
                (
                    [0] => Array
                        (
                            [start_time] => 09:00:00
                            [end_time] => 13:00:00
                            [hours] => 4 hours 0 mins
                        )

                    [1] => Array
                        (
                            [start_time] => 09:00:00
                            [end_time] => 14:00:00
                            [hours] => 5 hours 0 mins
                        )

                    [2] => Array
                        (
                            [start_time] => 13:30:00
                            [end_time] => 16:30:00
                            [hours] => 3 hours 0 mins
                        )

                )

            [total_attended_hours] => 4:0
        )

    [2020-07-15] => Array
        (
            [0] => Array
                (
                    [0] => Array
                        (
                            [start_time] => 09:00:00
                            [end_time] => 14:00:00
                            [hours] => 5 hours 0 mins
                        )

                    [1] => Array
                        (
                            [start_time] => 13:30:00
                            [end_time] => 17:00:00
                            [hours] => 3 hours 30 mins
                        )

                )

            [total_attended_hours] => 5:0
        )

)