Here are the data structures with brief descriptions:

Cc13dof_cfg_t	Click configuration structure definition
Cc13dof_t
CT_C13DOF_BME680_CALIB_DATA
CT_C13DOF_BME680_FIELD_DATA	Click ctx object definition
CT_C13DOF_BME680_GAS_SETTINGS
CT_C13DOF_BME680_TPH_SETTINGS