if (isset($_POST['daterange'])) {
        $sql = "SELECT * FROM `data` WHERE TimestampLocalTime BETWEEN  ' ".$start_date." ' AND ' ".$end_date." ' ";
    } elseif (isset($_POST['daterange']) && isset($_POST['device']) ) {
        $device = $_POST['device'];
        $sql = "SELECT * FROM `data` WHERE DeviceName = ' ".$device." '  AND TimestampLocalTime BETWEEN  ' ".$start_date." ' AND ' ".$end_date." ' ";
    } elseif (isset($_POST['daterange']) && isset($_POST['device']) && isset($_POST['experience']) ) {
        $experience = $_POST['experience'];
        $sql = "SELECT * FROM `data` WHERE DeviceName = ' ".$device." '  AND ExperienceName = ' ".$experience." ' AND TimestampLocalTime BETWEEN  ' ".$start_date." ' AND ' ".$end_date." ' ";
    } else {
        $sql = "SELECT * FROM `data` WHERE TimestampLocalTime BETWEEN  ' ".$start_date." ' AND ' ".$end_date." ' ";
    }