[('all', 'age'),
('all', 'creation_time'),
('all', 'dynamical_time'),
('all', 'mesh_id'),
('all', 'metallicity_fraction'),
('all', 'particle_angular_momentum_magnitude'),
('all', 'particle_angular_momentum_x'),
('all', 'particle_angular_momentum_y'),
('all', 'particle_angular_momentum_z'),
('all', 'particle_index'),
('all', 'particle_mass'),
('all', 'particle_ones'),
('all', 'particle_phi_spherical'),
('all', 'particle_phi_velocity'),
('all', 'particle_position'),
('all', 'particle_position_x'),
('all', 'particle_position_y'),
('all', 'particle_position_z'),
('all', 'particle_radial_velocity'),
('all', 'particle_radius'),
('all', 'particle_radius_spherical'),
('all', 'particle_specific_angular_momentum'),
('all', 'particle_specific_angular_momentum_magnitude'),
('all', 'particle_specific_angular_momentum_x'),
('all', 'particle_specific_angular_momentum_y'),
('all', 'particle_specific_angular_momentum_z'),
('all', 'particle_theta_spherical'),
('all', 'particle_theta_velocity'),
('all', 'particle_type'),
('all', 'particle_velocity'),
('all', 'particle_velocity_magnitude'),
('all', 'particle_velocity_x'),
('all', 'particle_velocity_y'),
('all', 'particle_velocity_z'),
('deposit', 'all_cic'),
('deposit', 'all_count'),
('deposit', 'all_density'),
('deposit', 'all_mass'),
('deposit', 'io_cic'),
('deposit', 'io_count'),
('deposit', 'io_density'),
('deposit', 'io_mass'),
('enzo', 'Average_creation_time'),
('enzo', 'Bx'),
('enzo', 'By'),
('enzo', 'Bz'),
('enzo', 'Cooling_Time'),
('enzo', 'Dark_Matter_Density'),
('enzo', 'Density'),
('enzo', 'Electron_Density'),
('enzo', 'Forming_Stellar_Mass_Density'),
('enzo', 'Galaxy1Colour'),
('enzo', 'Galaxy2Colour'),
('enzo', 'HII_Density'),
('enzo', 'HI_Density'),
('enzo', 'HeIII_Density'),
('enzo', 'HeII_Density'),
('enzo', 'HeI_Density'),
('enzo', 'MBHColour'),
('enzo', 'Metal_Density'),
('enzo', 'PhiField'),
('enzo', 'Phi_pField'),
('enzo', 'SFR_Density'),
('enzo', 'Star_Particle_Density'),
('enzo', 'Temperature'),
('enzo', 'TotalEnergy'),
('enzo', 'gammaHI'),
('enzo', 'kphHI'),
('enzo', 'kphHeI'),
('enzo', 'kphHeII'),
('enzo', 'x-velocity'),
('enzo', 'y-velocity'),
('enzo', 'z-velocity'),
('gas', 'El_density'),
('gas', 'El_fraction'),
('gas', 'El_mass'),
('gas', 'El_number_density'),
('gas', 'H_density'),
('gas', 'H_fraction'),
('gas', 'H_mass'),
('gas', 'H_number_density'),
('gas', 'H_p1_density'),
('gas', 'H_p1_fraction'),
('gas', 'H_p1_mass'),
('gas', 'H_p1_number_density'),
('gas', 'He_density'),
('gas', 'He_fraction'),
('gas', 'He_mass'),
('gas', 'He_number_density'),
('gas', 'He_p1_density'),
('gas', 'He_p1_fraction'),
('gas', 'He_p1_mass'),
('gas', 'He_p1_number_density'),
('gas', 'He_p2_density'),
('gas', 'He_p2_fraction'),
('gas', 'He_p2_mass'),
('gas', 'He_p2_number_density'),
('gas', 'angular_momentum_magnitude'),
('gas', 'angular_momentum_x'),
('gas', 'angular_momentum_y'),
('gas', 'angular_momentum_z'),
('gas', 'averaged_density'),
('gas', 'baroclinic_vorticity_magnitude'),
('gas', 'baroclinic_vorticity_x'),
('gas', 'baroclinic_vorticity_y'),
('gas', 'baroclinic_vorticity_z'),
('gas', 'cell_mass'),
('gas', 'chandra_emissivity'),
('gas', 'cooling_time'),
('gas', 'courant_time_step'),
('gas', 'cutting_plane_velocity_x'),
('gas', 'cutting_plane_velocity_y'),
('gas', 'cutting_plane_velocity_z'),
('gas', 'cylindrical_radial_velocity'),
('gas', 'cylindrical_radial_velocity_absolute'),
('gas', 'cylindrical_tangential_velocity'),
('gas', 'cylindrical_tangential_velocity_absolute'),
('gas', 'dark_matter_density'),
('gas', 'density'),
('gas', 'density_gradient_magnitude'),
('gas', 'density_gradient_x'),
('gas', 'density_gradient_y'),
('gas', 'density_gradient_z'),
('gas', 'dynamical_time'),
('gas', 'entropy'),
('gas', 'jeans_mass'),
('gas', 'kT'),
('gas', 'kinetic_energy'),
('gas', 'mach_number'),
('gas', 'magnetic_energy'),
('gas', 'magnetic_field_poloidal'),
('gas', 'magnetic_field_strength'),
('gas', 'magnetic_field_toroidal'),
('gas', 'magnetic_field_x'),
('gas', 'magnetic_field_y'),
('gas', 'magnetic_field_z'),
('gas', 'magnetic_pressure'),
('gas', 'matter_density'),
('gas', 'matter_mass'),
('gas', 'mean_molecular_weight'),
('gas', 'metal_density'),
('gas', 'metal_mass'),
('gas', 'metallicity'),
('gas', 'number_density'),
('gas', 'plasma_beta'),
('gas', 'pressure'),
('gas', 'pressure_gradient_magnitude'),
('gas', 'pressure_gradient_x'),
('gas', 'pressure_gradient_y'),
('gas', 'pressure_gradient_z'),
('gas', 'radial_mach_number'),
('gas', 'radial_velocity'),
('gas', 'radial_velocity_absolute'),
('gas', 'shear'),
('gas', 'shear_criterion'),
('gas', 'shear_mach'),
('gas', 'sound_speed'),
('gas', 'specific_angular_momentum_magnitude'),
('gas', 'specific_angular_momentum_x'),
('gas', 'specific_angular_momentum_y'),
('gas', 'specific_angular_momentum_z'),
('gas', 'sz_kinetic'),
('gas', 'szy'),
('gas', 'tangential_over_velocity_magnitude'),
('gas', 'tangential_velocity'),
('gas', 'temperature'),
('gas', 'thermal_energy'),
('gas', 'velocity_divergence'),
('gas', 'velocity_divergence_absolute'),
('gas', 'velocity_magnitude'),
('gas', 'velocity_x'),
('gas', 'velocity_y'),
('gas', 'velocity_z'),
('gas', 'vorticity_growth_magnitude'),
('gas', 'vorticity_growth_magnitude_absolute'),
('gas', 'vorticity_growth_timescale'),
('gas', 'vorticity_growth_x'),
('gas', 'vorticity_growth_y'),
('gas', 'vorticity_growth_z'),
('gas', 'vorticity_magnitude'),
('gas', 'vorticity_squared'),
('gas', 'vorticity_stretching_magnitude'),
('gas', 'vorticity_stretching_x'),
('gas', 'vorticity_stretching_y'),
('gas', 'vorticity_stretching_z'),
('gas', 'vorticity_x'),
('gas', 'vorticity_y'),
('gas', 'vorticity_z'),
('gas', 'xray_emissivity'),
('index', 'cell_volume'),
('index', 'cylindrical_r'),
('index', 'cylindrical_theta'),
('index', 'cylindrical_z'),
('index', 'disk_angle'),
('index', 'dx'),
('index', 'dy'),
('index', 'dz'),
('index', 'grid_indices'),
('index', 'grid_level'),
('index', 'height'),
('index', 'ones'),
('index', 'ones_over_dx'),
('index', 'radius'),
('index', 'spherical_phi'),
('index', 'spherical_r'),
('index', 'spherical_theta'),
('index', 'x'),
('index', 'y'),
('index', 'z'),
('index', 'zeros'),
('io', 'age'),
('io', 'creation_time'),
('io', 'dynamical_time'),
('io', 'mesh_id'),
('io', 'metallicity_fraction'),
('io', 'particle_angular_momentum_magnitude'),
('io', 'particle_angular_momentum_x'),
('io', 'particle_angular_momentum_y'),
('io', 'particle_angular_momentum_z'),
('io', 'particle_index'),
('io', 'particle_mass'),
('io', 'particle_ones'),
('io', 'particle_phi_spherical'),
('io', 'particle_phi_velocity'),
('io', 'particle_position'),
('io', 'particle_position_x'),
('io', 'particle_position_y'),
('io', 'particle_position_z'),
('io', 'particle_radial_velocity'),
('io', 'particle_radius'),
('io', 'particle_radius_spherical'),
('io', 'particle_specific_angular_momentum'),
('io', 'particle_specific_angular_momentum_magnitude'),
('io', 'particle_specific_angular_momentum_x'),
('io', 'particle_specific_angular_momentum_y'),
('io', 'particle_specific_angular_momentum_z'),
('io', 'particle_theta_spherical'),
('io', 'particle_theta_velocity'),
('io', 'particle_type'),
('io', 'particle_velocity'),
('io', 'particle_velocity_magnitude'),
('io', 'particle_velocity_x'),
('io', 'particle_velocity_y'),
('io', 'particle_velocity_z')]