Table 1. The RMS values of static PPP solutions with different session lengths (15 min, 30 min, 1 h, 2 h, 4 h, 6 h and 12 h) in single- and multi-system modes (MGEX and BETN networks from September 1 to December 9 in 2013).

System	Direction	0.25h	0.5 h	1.0 h	2.0 h	4.0 h	6.0 h	12.0 h
G (cm)	E	15.75	10.56	4.18	1.61	0.88	0.72	0.27
	N	6.29	2.37	1.19	0.48	0.30	0.16	0.14
	U	14.19	9.99	5.95	1.63	1.25	1.07	0.49
R (cm)	E	14.24	14.77	6.37	2.86	0.62	0.28	0.25
	N	14.19	10.98	4.10	1.43	0.30	0.22	0.12
	U	14.28	12.32	6.92	1.83	1.03	1.04	0.53
C (cm)	E	16.09	15.83	16.62	11.38	7.68	6.15	1.56
	N	13.13	11.04	14.43	9.41	3.17	3.11	0.44
	U	12.14	16.26	18.36	13.82	8.64	7.19	1.81
G/R/E/C (cm)	E	7.03	2.17	1.52	0.65	0.37	0.24	0.17
	N	2.51	1.02	1.07	0.43	0.18	0.14	0.11
	U	7.90	3.00	2.33	1.38	0.72	0.66	0.32