The category "<latitude_setting>" can be expressed as follows:

<latitude_setting>

<degree_setting-digit_sequence-not_initial_zero-90>

<degree_setting-digit_sequence-not_initial_zero-90> <minute_setting>

<degree_setting-digit_sequence-not_initial_zero-90> <minute_setting> <second_setting>

<degree_setting-not_digit_sequence-not_initial_zero-90>

<degree_setting-not_digit_sequence-not_initial_zero-90> <minute_setting>

<degree_setting-not_digit_sequence-not_initial_zero-90> <minute_setting> <second_setting>