The geology of the Riverina comprises several troughs and sedimentary basins. In the mid-latitude westerlies, upper level troughs and ridges often alternate in a high-amplitude pattern. For CSP, the footprint was 9 and 14, using parabolic troughs and solar towers, respectively. It is a 200 MW CSP solar plant using parabolic troughs. Alpine gardeners formerly used antique animal watering troughs, which became rare and expensive. The profile of crests and troughs in some ships contributed to this problem. Deep water sediments formed in the Cowra, Tumut and Hillend Troughs. Light waves have "crests" and "troughs". Water was pumped into long rows of temporary canvas troughs for the horses. Their eggs are laid in troughs or redds. The stone is characterised by pitted holes and troughs in its surface. This distinguishes small ripples from dunes, where the coarsest materials are generally in the troughs. Cooper's initial product offerings included plows, hog troughs, kettles and stoves. Surrounding auxin maxima are cells with low auxin troughs, or auxin minima. Inversely, sometimes collapsed frontal systems will degenerate into troughs.