It is 29.6°C at sea level. The environmental lapse rate between sea level and 1500 meters is 5.5 °C/1000m. The environmental lapse rate between 1500 meters and 4000 meters is 12.1°C/1000m. The normal lapse rate exists above 4000 meters. What will the temperature be at 6000 meters? Calculate your answer to one decimal point.