Refer to figure.
A Regulated Take-Off Weight (RTOW) table is a simplified form of table to use and is produced for a specific aircraft type on a particular runway and shows MTOM and speeds for a variety of temperatures and pressure altitudes, sometimes giving different configuration options.

• First of all, the wind direction 230^o is exactly opposite to the runway 23L, so the wind speed of 5 kt is a headwind.
• The questions asks to take the most conservative data and not interpolate, so, enter the RTOW table from the "0 kt" column.
• The OAT is +12°C, for which there is no exact row, it is between +5°C and +15°C. The more conservative row is the higher temperature of +15°C.
• The intersection between the "0 kt" column and "+15°C" row gives a RTOW of 78 000 kg.
• Applying the correction "-430 kg" for the wet runway condition, due to the moderate rain, the RTOW for departure becomes: 78 000 kg - 430 kg = 77 570 kg.
• No correction for pressures greater than 1013hPa is required.