Reading varies according to inclination of the class.

Reading varies according to inclination of the class.

Reading varies according to inclination of the class.

Reading varies according to inclination of the class.

Reading varies according to inclination of the class.

Reading varies according to inclination of the class.

Reading varies according to inclination of the class.

Reading varies according to inclination of the class.

Reading varies according to inclination of the class.

Reading varies according to inclination of the class.

Reading varies according to inclination of the class.

Reading varies according to inclination of the class.