standard parameters park grids b4-c6 outer grids c2-d2 zoological grids bb-07 pen grids r4-r4 lodge grids f4-d4 maint grids e5-l6 main grids c4-g7 sensor grids d5-g4 utility grids ah-b5 core grids al-cl circuit integrity not tested security grids remain automatic tim shook his head in frustration .