International Laser Ranging Service

SLR Monthly Global Performance Report Card

February 1, 2019 through January 31, 2020

The performance report card is divided into three tables for readability. Table 1 contains performance parameters based on data volume, on-site processing statistics and operational compliance issues. Tables L1 and L2 contain information about Lunar Laser Ranging during the past year. Table 2 contains performance parameters based on various Analysis Centers' rapid orbital analysis results.

A blank in any column in any of the tables implies either that there was no data or that there was insufficient data.

Below are the detailed descriptions of each column in Table 1 plots of the columns are linked in this description and in Table 1:

• Column 1 is the station location name.
• Column 2 is the monument marker number.
• Column 3 is the LEO pass total during the past 12 months.
• Column 4 is the LAGEOS and LARES pass total during the past 12 months.
• Column 5 is the high satellite pass total during the past 12 months.
• Column 6 is the pass total (i.e., all satellites) during the past 12 months.
• Column 7 is the LEO NP total during the past 12 months.
• Column 8 is the LAGEOS and LARES NP total during the past 12 months.
• Column 9 is the high satellite NP total during the past 12 months.
• Column 10 is the NP total (i.e., all satellites) during the past 12 months.
• Column 11 is the total tracking minutes (i.e., all satellites) during the past 12 months. This is computed by the summation of the number of normal points multiplied by its bin size in minutes.
• Column 12 is the average single-shot calibration RMS, in millimeters, during the last quarter.
• Column 13 is the average single-shot Starlette RMS, in millimeters, during the last quarter.
• Column 14 is the average single-shot LAGEOS RMS, in millimeters, during the last quarter.

The first entry in each table is for the performance baseline goal. Note: There are no baseline goals for NP data quantities, single shot RMSs.

Additional Notes: Only stations that have supplied data within the last year are included in the table. The table is sorted in descending order by total passes.

Table 1: Station performance parameters based on data volume, on-site processing statistics and operational compliance issues

Site Information		Data Volume									Data Quality
Column 1	2	3	4	5	6	7	8	9	10	11	12	13	14
Station Location	Station Number	LEO pass Tot	LAGEOS and LARES pass Tot	High pass Tot	Total passes	LEO NP Total	LAGEOS and LARES NP Total	High NP Total	Total NP	Minutes of Data	Cal. RMS	Star RMS	LAG RMS
Baseline		2300	600	3000	3500
Yarragadee	7090	19963	3217	6744	29924	323372	30707	32587	386666	295565.71	2.8	5	5.2
Changchun	7237	9213	1293	5158	15664	127631	10447	23827	161905	169638.24	6	9.6	11.5
Zimmerwald_532	7810	8354	1909	3885	14148	135855	24744	13878	174477	140380.6	6.8	9.3	12.3
Mount_Stromlo_2	7825	7665	1454	1784	10903	108304	9968	8016	126288	90447.11	3.4	5.2	7.3
Kunming	7819	4389	964	5519	10872	49520	4635	12687	66842	85913.3	5.2	11.9	10.8
Herstmonceux	7840	5889	1268	3414	10571	77258	15052	11104	103414	101549.33	3.6	6	8.2
Wettzell	8834	4845	1351	2964	9160	44616	10966	12635	68217	95830.23	3	9.3	10.9
Wettzell_SOSW	7827	3428	987	3898	8313	36048	6169	9804	52021	69552.33	8.1	11.8	13.2
Greenbelt	7105	6166	1053	789	8008	105313	12512	3536	121361	61624.05	2	6.9	9
Graz	7839	4092	751	3118	7961	75974	6729	12925	95628	94512.33	2.5	3.3	5.1
Shanghai_2	7821	2960	776	2854	6590	24272	6486	12732	43490	85007.34	7.1	7.1	7.4
Matera_MLRO	7941	3989	1165	1179	6333	34496	10282	6620	51398	69126.79	1	2.8	3.3
Monument_Peak	7110	4527	431	329	5287	77442	4240	1059	82741	30419.84	3.1	6.8	9.4
Potsdam_3	7841	3067	607	1314	4988	38904	4328	4306	47538	36873.28	2.1	5.8	7.7
Hartebeesthoek_HARL	7501	3396	692	749	4837	47944	6701	4516	59161	45953.97	3	6.2	7.5
Arequipa	7403	3568	171	0	3739	33738	804	0	34542	11364.2	4.8	7.5	16.6
Beijing	7249	1586	368	1312	3266	11674	2100	4312	18086	28910.91	8	12.7	17
Simeiz	1873	2207	521	409	3137	21552	3077	1780	26409	18041.26	15.3	14.9	13.4
Haleakala	7119	2501	577	0	3078	37818	6013	0	43831	19180.32	2.4	6.7	9.5
Grasse_MEO	7845	470	636	1498	2604	4634	7893	6674	19201	52624.92	9.3		16.3
Badary	1890	1749	668	485	2902	14853	3687	1444	19984	17683		35.3	37.3
Hartebeesthoek_HRTL	7503	1087	354	933	2374	12014	2095	3891	18000	26457.74	30.8	25.6	28.1
Katzively	1893	1963	356	4	2323	24054	2508	15	26577	10421.01	24.7	40.7	28
Altay	1879	61	273	1732	2066	969	1516	5044	7529	28015.58			30.8
Irkutsk	1891	1340	245	374	1959	9901	1228	851	11980	8930.56	40	30.4	33.9
Komsomolsk	1868	35	252	1566	1853	796	1557	5262	7615	28965.49			29.5
Svetloe	1888	886	323	190	1399	7325	2016	525	9866	7825.68		25.7	32.8
Arkhyz	1886	453	339	591	1383	3776	2019	2444	8239	17132.5		37.9	31.9
Brasilia	7407	170	218	790	1178	1003	832	2483	4318	14346.31	29.5	18.4	26
Wuhan	7396	437	150	581	1168	3713	1129	2384	7226	14938.32	6.4	8.4	10.1
Borowiec	7811	769	211	69	1049	12495	2119	317	14931	7578.54	13	23.7	17.7
Simosato	7838	815	157	7	979	8852	1305	31	10188	5337.9	11.6	9.7	14.7
Riga	1884	619	194	95	908	11413	2016	502	13931	7882.32	9.4	11.1	11.2
Kiev	1824	783	87	0	870	7279	633	0	7912	3266.02	11.5	23.5	32.2
Baikonur	1887	0	333	514	847	0	1578	1410	2988	10206			32.7
Zelenchukskaya	1889	285	55	87	427	2322	316	225	2863	2311.92		32.3	34.5
Tahiti	7124	300	58	65	423	3986	497	366	4849	3569.07
Sejong	7394	238	59	1	298	3189	476	11	3676	2010.51	3.7	8.5	11.2
Mendeleevo	1874	64	69	123	256	1397	879	404	2680	4086.41	31	25.9	26.5
San_Fernando	7824	55	166	0	221	514	624	0	1138	1063.42	6.6	9.7	19.3
Tanegashima	7358	26	151	0	177	206	1191	0	1397	1861.09	1.4	3.5	4.8

Below are the detailed descriptions of each column in Tables L1 and L2:

• the first column, L1, is the station location name.
• the second column, L2, is the monument marker number.
• the third column, L3, is the wavelength.
• the fourth column, L4, is the number of passes during the past 12 months.
• the fifth column, L5, is the number of Lunar Laser Ranging normal points during the past 12 months
• the sixth, ninth, twelfth, fifteenth, and eighteenth columns, L6, L9, L12, L15, L18, are the number of passes taken, specific to a retroreflector, during the past 12 months in which there were Lunar ranging measurements.
• the seventh, tenth, thirteenth, sixteenth, and nineteenth columns, L7, L10, L13, L16, L19 are the number of normal points taken, specific to a retroreflector, during the past 12 months
• the eighth, eleventh, fourteenth, seventeenth, and twentieth columns, L8, L11, L14, L17, L20 are the average Lunar Laser Ranging normal points rms 12 months in mm for a specific retroreflector

Table L1: Lunar Laser Ranging information during the past year

Last 12 months			All reflectors		Apollo-11			Apollo-14			Apollo-15			Luna-17			Luna-21
Column L1	L2	L3	L4	L5	L6	L7	L8	L9	L10	L11	L12	L13	L14	L15	L16	L17	L18	L19	L20
Station Location	Station number	λ	Passes	NPTs	Passes	NPTs	RMS	Passes	NPTs	RMS	Passes	NPTs	RMS	Passes	NPTs	RMS	Passes	NPTs	RMS
Grasse_MEO	7845	1064	110	1232	82	226	9.77	71	204	8.83	104	384	17.16	66	217	9.51	66	201	9.63
Grasse_MEO	7845	532	11	56	6	17	2.57	5	9	3.26	10	24	9.29	4	6	9.55
Matera_MLRO	7941	532	14	39	4	4	47.48	2	2	55.5	12	28	55.26				3	5	37.78
Wettzell	8834	1064	8	30							4	14	14.95	3	12	6.48	1	4	9.78

Table L2: Lunar Laser Ranging information during the past 3 months

Last 3 months			All reflectors		Apollo-11			Apollo-14			Apollo-15			Luna-17			Luna-21
Column L1	L2	L3	L4	L5	L6	L7	L8	L9	L10	L11	L12	L13	L14	L15	L16	L17	L18	L19	L20
Station Location	Station number	λ	Passes	NPTs	Passes	NPTs	RMS	Passes	NPTs	RMS	Passes	NPTs	RMS	Passes	NPTs	RMS	Passes	NPTs	RMS
Grasse_MEO	7845	1064	17	165	10	18	26.54	11	26	23.33	17	66	37.73	12	37	17.39	8	18	21.91
Grasse_MEO	7845	532	1	4	1	1	15.4	1	1	16.3	1	1	33.1	1	1	8.8
Matera_MLRO	7941	532	2	4	1	1	58.4				2	3	48.83

Below are the detailed descriptions of each column in Table 2:

• the first column is the station location name.
• the second column is the monument marker number.
• following columns are in grouped by analysis center with four columns for each
  • the first AC column is the average LAGEOS normal point RMS, in millimeters, during the last 3 months
  • the second AC column is the measure of short term bias stability, in millimeters, during the last 3 months. The short term stability is computed as the standard deviation about the mean of the pass-by-pass range biases (minimum number of passes in the last 3 months is 10)
  • the third AC column is the measure of long term bias stability, in millimeters, during the past year. The long term stability is the standard deviation of the monthly range bias estimates. A station must have tracked LAGEOS (1,2) in at least 8 of the last 12 months in order to compute this metric.
  • the fourth AC column is the percentage of LAGEOS normal points that were accepted in the analysis.

The first entry in each table is for the performance baseline goal.

Additional Notes: Only stations that have supplied data within the last year are included in the table. The table is sorted in descending order by total data volume.

Table 2: Performance parameters based on various Analysis Centers' rapid orbital analysis results.

Site Information		DGFI Orbital Analysis				Hitotsubashi Univ. Orbital Analysis				JCET Orbital Analysis				MCC Orbital Analysis				SHAO Orbital Analysis
Station Location	Station Number	LAG NP RMS (mm)	short term (mm)	long term (mm)	% good LAG. NP	LAG NP RMS (mm)	short term (mm)	long term (mm)	% good LAG. NP	LAG NP RMS (mm)	short term (mm)	long term (mm)	% good LAG. NP	LAG NP RMS (mm)	short term (mm)	long term (mm)	% good LAG. NP	LAG NP RMS (mm)	short term (mm)	long term (mm)	% good LAG. NP
Baseline		10.0	20.0	10.0	95	10.0	20.0	10.0	95	10.0	20.0	10.0	95	10.0	20.0	10.0	95	10.0	20.0	10.0	95
Kiev	1824					44				8.4				19	38.5			0.7		50.1	40
Komsomolsk	1868					4.3	18.7	10.3	100	3.7	23	14	96	4.1	29.7	10.5	98	2.7	27	7.8	94
Simeiz	1873					23.6	42.6	4.9	97	4.8	45.8	10.6	59	21.1	39.7	5.2	88	6.9	40.6	13.5	64
Mendeleevo	1874					5.2	10			5.2	9			5.7	7.6			5.6	11.2
Altay	1879					2.4	21.6	11.2	100	2.1	21.2	8.8	98	2.3	29.7	14.7	99	1.5	24.1	10.9	95
Riga	1884					5.2	23.3	10.4	100	5.5		14.4	74	15.4	36.2	14.4	95	6.5	18.2	8	92
Arkhyz	1886					5.8	25.9	8.7	100	4.9	24.8	12.1	89	5.3	19.9	7.1	97	4.3	20.6	8.5	95
Baikonur	1887					6	17.2	8.1	100	3.9	18.2	6.2	91	6.3	14.1	10.6	95	3.9	27.1	14.4	97
Svetloe	1888					5.5	11.8	7.3	100	4.2	20.5	10.6	97	5.2	13	7.3	98	3.7	12.6	9.2	95
Badary	1890					6.2	12.7	4.6	100	4.6	18.4	5.2	96	5.7	18	5.7	98	3.4	22.9	5.3	96
Irkutsk	1891					8.7	12.9	4.3	100	5.4	20	5.6	87	8.5	19	12	94
Katzively	1893					9.8	17.3	10	98	5.3	18.2	8.4	78	9.2	19.1	11.1	89	7.9	22	8.4	92
Yarragadee	7090					1.8	6.4	1.3	100	2.4	13.5	1.4	100	2.7	15.8	2.5	99	1.3	12.6	2	95
Greenbelt	7105					1.7	7	2.5	100	2.4	12.5	5.8	99	2.3	13	4.1	98	1.6	11.9	3.1	95
Monument_Peak	7110					2.1	6.6	4.5	100	2.2	12	6.3	99	2.2	11.4	8.6	98	1.3	12.6	9.8	95
Haleakala	7119					2	9	4.4	99	2.2	13.6	4.6	98	3.2	18.5	7	99	1.7	19	7.4	95
Tahiti	7124					2.2	8.3	12.8	100	2.9	15.8
Changchun	7237					4.3	15.9	4.8	100	3.2	18.9	2.5	96	4.9	19.1	4.3	97	2.7	17.7	4.1	96
Beijing	7249					11.2	20.9	10.7	100	4.8	23	5.5	91	7.5	22.7	10.6	96	3.7	23	10.8	92
Tanegashima	7358					1.5		8.4	100	2.1		33.8	97	3.2
Sejong	7394					1.9	12.7			2.3				1.9
Wuhan	7396									2.1	27.8			3.4	39.7
Arequipa	7403					3.3	15.4	8.3	98	3.8	10.5	12.1	91	20.9	41.1	21.6	98	1.4		20.3	73
Brasilia	7407					3.9	15.8	6.3	100	3.1	29.2	22	95	5	21.1	11.5	99	2.4	37.6	25.7	97
Hartebeesthoek_HARL	7501					1.6	9.1	3.4	100	2.2	16.3	4.8	99	1.7	20.6	3.3	99	1.3	18.8	4.4	96
Hartebeesthoek_HRTL	7503					4	23	4.6	100	4.8	24	3.8	92	5.8	19.4	5.8	99	1		14.4	82
Zimmerwald_532	7810					1.5	6.3	1.1	100	1.8	11.6	2.5	100	3.3	12.6	1.5	97	1.6	10.7	1.6	96
Borowiec	7811					3.6	19.6	2.8	100	3.6	19.9	8.3	98	4	19.4	4.1	100	2.5	21.9	8.1	94
Kunming	7819					4.1	23.5	5.4	100	3.5	28.4	5	98	4.3	24.4	7.4	99
Shanghai_2	7821					1.7	10.3	6.3	100	1.8	13.8	4.5	99	2.2	16.5	5.1	98	1.4	19.5	6.1	92
San Fernando	7824					13.5	15.9			3.4	20.4			14.4				0.9
Mount_Stromlo_2	7825					2.9	8.2	2.7	100	2.5	17.5	5.3	100	4.3	14.2	2.3	97	1.3	15.3	2	95
Wettzell_SOSW	7827					2.5	7.7	2.9	100	1.8	14.9	6.3	99	8.9	15.8	4.5	95
Simosato	7838					3.6	19	8.8	100	3.7	23.9	12.6	94	4.2	22.9	10.1	99	3.5	32.5	17.8	92
Graz	7839					1.5	6.5	2.2	100	1.2	8.2	2.9	100	2.6	10.4	3.3	98	0.7	10.8	2.1	97
Herstmonceux	7840					0.9	5.2	1	100	1.3	9.5	2.1	100	1.6	8.7	1.9	99	0.8	5.8	1.5	97
Potsdam_3	7841					1.5	9.1	3.7	100	1.5	11.9	3.8	100	1.9	13.2	3	98	0.8	16.7	5.8	97
Grasse_MEO	7845					2.6	10.9	2.6	100	2.9	15.1	4.4	99	2.9	13.3	3.4	97	2.1	18.1	2.7	95
Matera_MLRO	7941					1.1	7.3	1.7	100	1.3	13.1	1.5	100	2.5	13.9	2.5	100	0.8	16.3	1.5	95
Wettzell	8834					1.2	5.9	6.4	100	1.3	11	9.6	99	10.5	43	7.7	98	0.6	12.8	8.8	95
San_Fernando	7824	55	166	0	221	514	624	0	1138	1063.42	6.6	9.7	19.3
Tanegashima	7358	26	151	0	177	206	1191	0	1397	1861.09	1.4	3.5	4.8