The official ILRS products consist of SINEX files of weekly station coordinates and daily Earth Orientation Parameters (x-pole, y-pole and excess Length-Of-Day (LOD)) estimated from 7-day arcs (Sunday 00 UTC to Saturday 24 UTC). Official ILRS Analysis Centers (ASI, BKG, DGFI, ESA, GA, GFZ, GRGS, JCET and NSGF) and Combination Centers (ASI as primary and JCET as backup) are tasked with the generation of the products with individual and combined solutions respectively.
SLR observations on LAGEOS-1, LAGEOS-2, Etalon-1 and Etalon-2 are reduced in 7-day arcs to generate the individual EOP and station positions solutions. The observations are reduced to generate a loosely constrained solution for station coordinates and EOPs following strict standards agreed upon within the ILRS Analysis Working Group to provide high quality products consistent with the IERS Conventions 2003.
The time series of weekly ASI sinex file is available at CDDIS and EDC, named as asi.pos+eop.yymmdd.vxx.snx.Z.

The evaluation and monitoring of the time series submitted by the ILRS ACs and by the Primary CC are available in terms of:

1) Earth Orientation Parameters

2) Site coordinates

3) Geocenter

4) Solution Statistics