Rust

Fix CGGTTS error when the observation interval is 1 second #1710

Job	Run time
Tests	8m 57s
Documentation	4m 52s
Linter	13s
MacOS	6m 50s
Build (Workspace default, ., -r)	6m 48s
Windows	19m 42s
Build (Workspace All-features, ., --all-features)	4m 17s
Build (RINEX Default, rinex, -r)	51s
Build (RINEX Observations, rinex, --features "obs")	51s
Build (RINEX Navigation, rinex, --features "nav")	2m 47s
Build (RINEX QC, rinex, --features "qc")	52s
Build (RINEX Meteo, rinex, --features "meteo")	45s
Build (RINEX Clock, rinex, --features "clock")	48s
Build (ANTEX, rinex, --features "antex")	48s
Build (DORIS RINEX, rinex, --features "doris")	1m 2s
Build (RINEX Processing, rinex, --features "processing")	56s
Build (RINEX Full, rinex, --features "full")	2m 52s
Build (RINEX All-features, rinex, --all-features)	2m 58s
Build (SP3 default, sp3, -r)	47s
Build (SP3 QC, sp3, --features "qc")	36s
Build (SP3 Processing, sp3, --features "processing")	51s
Build (SP3 All-features, sp3, --all-features)	45s
Build (RINEX-QC Default, rinex-qc, -r)	3m 41s
Build (RINEX-QC SP3, rinex-qc, --features "sp3")	3m 15s
Build (RINEX-QC All-features, rinex-qc, --all-features)	3m 7s
	1h 20m 11s

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