In eu-ops and my carrier manual:
CAT I: In case of failed or downgraded...... TDZ RVR assessement system.... no effect on applicable minima
so to get the required 550 RVR I will use the table to converts general visibility in RVR/CVR
in case of CAT II-III ops I can use mid RVR in according to national regulations
Are RVR report only valid in one direction? never knew..... Nice!