UTC(IT)-GPS=-15s

---------------------------------
MJD    x [ns] y [10E-13]
---------------------------------
55287 -19.3   0.1
55288 -21.1   0.2
55289 -21.5   0.0
55290 -21.9   0.0
55291 -21.8   0.0
55292 -19.0  -0.3
55293 -21.6   0.3
55294 -21.2  -0.1
55295 -20.7  -0.1
55296 -22.4   0.2
55297 -22.9   0.1
55298 -21.7  -0.1
55299 -26.4   0.5
55300 -27.7   0.1
55301 -28.8   0.1
55302 -29.2   0.1
55303 -29.3   0.0
55304 -31.3   0.2
55305 -31.6   0.0
55306 -30.9  -0.1
55307 -30.7   0.0
55308 -28.2  -0.3
55309 -25.1  -0.4
55310 -26.4   0.1
55311 -26.9   0.1
55312 -28.2   0.2
55313 -28.1   0.0
55314 -29.0   0.1
55315 -31.1   0.3
55316 -33.5   0.3