ESO WEATHER WATCH: PWV
Root mean square differences
between forecasted and observed values of PWV (mm) at Paranal and La Silla. during the period 26 August - 31 December, 1998
Ground Meteorology incl. excl. excl.
Ground Monitor Observed PWV 1.17 1.5 N/A
Satellite Observed PWV 0.98 1.58 1.23
Average for all 3-hourly forecast periods out to 24 hours