�PNG


IHDR[<	��{	pHYs��
�+baSE:+��IDATx�휿kALJR� �Xb#,$"!���BDD!����H�?�FD$[���B,�FBHD�EH#"����o���n��e�͐��丝��fgf��Ƙj�^Â���i�4�ܢ��6H���ä�+Ȭ'.K�#G5zNZt� ]w���v���}A��,�'震��6�[�{��Kr=�Ғ�a���l�j3�5��"�Wmؔ����M�j���;	���}���~r��`��r�Z�x<�f�K-lmﻤK�O�#-�MZ���'�� lM�˒o�7��@�F�1y�=e�4Ѐ��C�z��|��<a���w�>�i�Z���>e�{uK�a�	[�[����Qe���O��};�{9����u#�|��z3_��u�}�CG��ɯY�sء�yY<��$ߨæ���Ґg�%�	��=f�98��c�Mʚ��aǴ+z}_�ɬ%c��L/2e���|Z&_��%K�S&o�{�>mE�͚�9�K)�X�}� O"a#l�v
�t�=��a���g�a��L1l��)�����B�����oL)��4V)���C�gn��HgE�<��Q~�fڞ#^���ӰV	Wak���J�mx^�0�h�p5�*0:�so��=n7ҰV	Wak���x}��`��T6$�ŽiR:w�T��<2�o�I�C�Fh����(>��԰CK�Γ~K��<5:�����ҹ��gG5�����"�t�oGw�N͌��Q@�%h!��d�1�s^/�s�
���5�I�}�
�tEXtMathML<math xmlns="http://www.w3.org/1998/Math/MathML"><mfenced><mfrac><mrow><msub><mi mathvariant="normal">M</mi><mn>2</mn></msub><mo>&#xA0;</mo><mo>-</mo><mo>&#xA0;</mo><msub><mi mathvariant="normal">M</mi><mn>1</mn></msub></mrow><mrow><msub><mi mathvariant="normal">M</mi><mn>1</mn></msub><mo>&#xA0;</mo><mo>-</mo><mo>&#xA0;</mo><msub><mi mathvariant="normal">M</mi><mn>2</mn></msub></mrow></mfrac></mfenced></math>���4IEND�B`�