Hello, I have the follwing question about the UTCI, I am running a very simple calculation, I do get a 9999 value for UTCI results, do you have any idea why is this happening, is there a missing value to fill? the other parameters are showing actual values.

RayMan Pro 2.3 beta © 1999 - 2014
Meteorological Institute, University of Freiburg, Germany
place: Deutschland (Berlin)
geogr. longitude: 13°26' latitude: 52°30' timezone: UTC +1.0 h
horizon limitation: 0.0% sky view factor (RayMan): 1.000

date day of time sunr. sunset SDmax SDact SVF_Ray Gmax Gact Sact Dact A E Ts Ta VP RH v C Tmrt height weight age sex cloth. activ. PMV PET SET* UTCI PT
d.m.yyyy year h:mm h:mm h:mm min min W/m² W/m² W/m² W/m² W/m² W/m² °C °C hPa % m/s octas °C m kg a clo W °C °C °C °C
23.5.2022 143 11:21 3:59 20:07 968 966 1.000 833.3 833.3 731.8 101.5 336.5 576.3 46.1 20.0 12.5 53.5 0.1 0.0 35.0 1.8 75.0 35 m 0.90 80.0 1.3 28.0 29.6 9999.0 24.5


Thank you

Kind regards