Six degrees of refrigeration

Today, the maximum temperature is 9 degrees Celsius. The average temperature is considerably lower than that, around 6 degrees. But I'm sat in my corridor at my new permanent seat with no heating to speak of and no insulation save a broken glass panel above my head that's covered with a bit of cardboard box. How can this be an appropriate working environment by anyone's judgement? Must stop now as my fingers are seizing up... (No, that's not an exaggeration.)