Near the centre of the small town of Hattersheim, about 20km west of Frankfurt. The anenometer is mounted on a mast 1m above the roof apex and 10m above the ground. The rain gauge is mounted on a large flat roof, 3m above the ground. Both have fair exposure (for an urban site). The thermometer/hygrometer is mounted at a height of 1.5m above the edge of the lawn/flowerbed in a home-made radiation screen.