Gravity: G0 = Zero Gravity, G1 = Low Gravity, G2 = Moderate Gravity, G3 = High Gravity, G4 = Very High Gravity, G5 = Super High Gravity
Radiation: R0 = Zero Radiation, R1 = Low Radiation, R2 = Moderate Radiation, R3 = High Radiation, R4 = Extreme Radiation, R5 = Lethal Radiation
Atmosphere: A0 = Vacuum, A1 = Inert, A2 = Moderate/Breathable, A3 = Toxic, A4 = Corrosive, A5 = Super Corrosive
Pressure: P0 = Vacuum, P1 = Very Thin, P2 = Thin, P3 = Moderate, P4 = Dense, P5 = Crushing
Heat: H0 = Near Absolute Zero, H1 = Frigid, H2 = Temperate, H3 = Torrid, H4 = Super Torrid, H5 = Inferno