Fig. 3. Daily mean temperatures (marked with circles) as obtained from OH band night airglow emissions for the 80/81, 82/83, 83/84, 84/85, 85/86, 86/87, 87/88, 89/90, 90/91, 93/94, 94/95, 95/96, 97/98, 99/00 and 00/01 winter seasons at the Auroral Station in Adventdalen, Svalbard.