UTC(IT)-GPS=-15s

---------------------------------
MJD    x [ns] y [10E-13]
---------------------------------
55256 -29.3  -0.1
55257 -26.7  -0.3
55258 -26.7   0.0
55259 -26.7   0.0
55260 -25.2  -0.2
55261 -25.6   0.1
55262 -24.8  -0.1
55263 -23.6  -0.1
55264 -22.9  -0.1
55265 -22.1  -0.1
55266 -21.5  -0.1
55267 -22.2   0.1
55268 -22.7   0.1
55269 -22.3  -0.1
55270 -19.1  -0.4
55271 -18.7   0.0
55272 -18.9   0.0
55273 -18.7   0.0
55274 -20.9   0.3
55275 -18.2  -0.3
55276 -16.7  -0.2
55277 -16.9   0.0
55278 -15.5  -0.2
55279 -16.0   0.1
55280 -16.1   0.0
55281 -15.4  -0.1
55282 -18.1   0.3
55283 -17.8   0.0
55284 -16.7  -0.1
55285 -17.1   0.0
55286 -18.2   0.1