Precipitable Water Vapour
Statistical results for water-vapour at Roque de los Muchachos Observatory (ORM) from MAR 10 - The Infrared astronomical characteristics of ORM: PWV statistics. (MNRAS, Monthly Notices of the Royal Astronomical Society, Volume 405, Issue 4, pp. 2683-2696.

These GPS numbers were cross-calibrated using radiometer measurements. The calibration equation is the follow: PWV = (0.9± 0.1)×(GPS estimation) -(1.2± 0.1).

 Previous results for water vapour