International Laser Ranging Service

SLR Monthly Global Performance Report Card

June 1, 2022 through May 31, 2023

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	18442	2965	4327	25734	288914	28213	16589	333716	207873	3.2	5.4	5.6
Changchun	7237	9468	1423	4536	15427	127660	10742	18033	156435	138395	6.7	9.9	10.7
Mount_Stromlo_2	7825	7947	1718	1895	11560	116500	15129	12495	144124	130588	2.7	11.4	8.0
Wettzell	8834	5322	1246	3161	9729	59949	8755	10901	79605	88042	2.9	8.0	9.0
Herstmonceux	7840	6029	1206	1418	8653	79191	12815	4716	96722	69561	3.2	8.6	12.3
Greenbelt	7105	6670	875	472	8017	121620	9927	2222	133769	58336	4.0	8.3	8.9
Kunming	7819	3227	738	3694	7659	34095	3632	7926	45653	55684	3.8	12.4	11.9
Monument_Peak	7110	6826	753	55	7634	103892	7183	186	111261	41322	2.6	6.3	7.9
Graz	7839	3661	746	1691	6098	59991	6079	5210	71280	55769	2.4	3.8	5.2
Shanghai_2	7821	2464	673	2882	6019	20931	6186	12494	39611	82068	7.1	9.1	5.2
Wuhan	7396	2028	582	2122	4732	20846	4415	8822	34083	59033	5.2	7.4	6.7
Wettzell_SOSW	7827	1931	626	1860	4417	14086	3250	4988	22324	34739	9.1	12.2	12.4
Potsdam_3	7841	3030	605	597	4232	46462	5398	2214	54074	32895	2.6	6.4	9.6
Matera_MLRO	7941	2408	856	462	3726	19688	5497	2429	27614	33457	1.3	5.9	6.6
Grasse_MEO	7845	782	688	1839	3309	9372	8459	7383	25214	63433	9.1	13.7	15.3
Katzively	1893	2151	256	6	2413	26414	1854	34	28302	10947	23.3	39.8	26.7
Beijing	7249	1205	254	929	2388	12021	1518	2299	15838	17582	4.2	8.4	8.8
Simeiz	1873	1950	263	24	2237	16817	1615	130	18562	7766	20.2	11.6	12.7
Zelenchukskaya	1889	1615	598	15	2228	16896	5249	61	22206	15812		31.7	36.3
Hartebeesthoek_HARL	7501	1700	302	182	2184	22845	2596	790	26231	16090	5.6	9.3	11.0
Arequipa	7403	2052	45	0	2097	16871	203	0	17074	6262	4.2	7.3	6.1
Simosato	7838	1491	340	1	1832	14177	2512	9	16698	9873	6.9	7.7	12.7
Tenerife	7701	509	304	966	1779	5261	2252	3800	11313	25433	5.5	10.7	5.9
Haleakala	7119	1427	294	0	1721	22822	3035	0	25857	12169	2.4	5.4	5.7
Svetloe	1888	1180	441	17	1638	8585	3221	47	11853	7471		10.9	15.2
Badary	1890	1105	297	14	1416	8042	1526	43	9611	4700		36.9	30.7
Borowiec	7811	718	196	32	946	11504	2055	171	13730	7416	14.4	19.3	18.4
Tahiti	7124	723	122	40	885	8782	1073	157	10012	5365	2.9	7.3	7.5
San_Fernando	7824	813	13	0	826	5340	36	0	5376	1785	6.9	12.5	21.0
Hartebeesthoek_HRTL	7503	499	238	0	737	4468	1561	0	6029	4529	26.5	17.5	21.6
Irkutsk	1891	364	132	6	502	1936	668	19	2623	1925	39.0	24.5	32.1
Riga	1884	288	75	52	415	4302	918	407	5627	4725	7.1	15.1	18.6
Sejong	7394	151	30	0	181	2114	334	0	2448	1297	4.1	8.8	9.8
Mendeleevo	1874	23	75	5	103	246	950	18	1214	1983	31.9	19.9	26.8
Arkhyz	1886	53	38	0	91	529	243	0	772	534		29.3	25.3
Kiev	1824	76	9	0	85	1138	81	0	1219	497	11.5	36.1	36.6
Apache_Point	7045	0	0	0	0	0	0	0	0	224	0.4

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
Apache Point	7045	532.0	8	58	8	11	4.93	7	10	3.48	8	25	4.00	5	7	3.13	3	5	2.40
Grasse_MEO	7845	1064.0	49	622	27	106	22.75	29	103	23.58	45	221	36.41	29	96	22.36	27	96	23.31
Grasse_MEO	7845	532.0	2	12	1	1	30.80	1	1	29.00	2	6	37.95	2	4	28.10
Matera_MLRO	7941	532.0	7	16	3	5	43.76	1	1	62.40	6	10	49.49
Wettzell	8834	1064.0	8	119							5	79	14.01	1	17	16.64	2	23	22.38

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

1064.0

7

59

2

5

28.75

2

5

16.40

7

29

28.39

5

13

23.12

4

7

21.68

Wettzell

8834

1064.0

4

65

2

42

12.69

2

23

22.38

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					25.0				4.1				20.0
Simeiz	1873					19.6		8.3	98	6.8		24.4	61
Riga	1884					7.3				3.0	23.0	10.0	98
Svetloe	1888					2.7	9.4	3.1	100	2.2	10.8	3.8	99	2.7	12.4	7.0	100	1.4	24.6	7.1	95
Zelenchukskaya	1889					5.9	17.3	6.0	100	3.3	23.8	7.5	93	5.3	9.8	5.9	97	4.4	27.8	6.3	94
Badary	1890					8.8	10.9	14.0	100	3.3	11.1	14.5	92	6.7	15.8	13.5	97	2.9	24.1	14.4	95
Irkutsk	1891							7.1	100			12.4	93			13.6	97
Katzively	1893					8.0		12.9	99	6.6		16.7	81	14.7		17.5	91
Yarragadee	7090					1.6	5.6	0.7	100	2.2	16.5	1.2	100	4.1	15.3	1.9	99
Greenbelt	7105					2.0	7.2	2.8	100	2.3	19.3	3.2	99	2.3	13.2	4.3	98
Monument_Peak	7110					2.1	10.7	2.0	100	2.4	17.7	4.6	99	2.5	11.4	3.6	99
Haleakala	7119					1.4	6.8	3.0	100	2.2	18.1	4.8	100	3.8	16.6	5.7	100
Tahiti	7124					1.6	5.5			1.6	11.2			1.8	11.8
Changchun	7237					3.4	18.2	5.9	100	3.0	25.4	7.0	98	3.7	24.3	7.3	98	0.7		6.1	96
Beijing	7249					1.0		11.7	99	1.6		12.2	99			8.3	99
Tsukuba	7306					0.9	10.6			2.2	30.6
Sejong	7394					4.0				4.7				4.0
Wuhan	7396					1.5	17.4	4.8	100	1.4	15.6	5.7	100	3.0	21.6	8.3	99	1.6	4.0	2.4	2
Arequipa	7403					2.9				2.6				27.0
Hartebeesthoek_HARL	7501					3.2	8.9	4.5	100	2.4	19.5	4.9	98	3.3	21.7	9.3	98
Tenerife	7701					1.4	17.7	4.6	100	1.3	14.8	3.6	100
Borowiec	7811					5.6	7.1	6.7	100	3.5	20.6	10.4	97	4.0		5.2	99	4.0		5.6	94
Kunming	7819					4.1	40.9	15.2	100	3.4	48.2	14.5	96	4.9	31.6	22.8	99
Shanghai_2	7821					1.5	12.5	4.2	100	1.9	18.6	4.6	99	2.8	17.3	5.2	99	2.3	12.7	9.2	96
Mount_Stromlo_2	7825					2.3	4.7	1.2	100	2.4	13.2	2.1	99	2.5	14.7	3.2	98
Wettzell_SOSW	7827					2.2	8.4	3.0	100	1.7	13.9	4.2	100	7.4	15.9	4.5	95
Simosato	7838					4.1	13.5	5.7	98	4.2	22.8	5.8	87	5.3	17.2	7.2	95
Graz	7839					0.9	5.0	1.4	100	1.1	10.6	2.3	100	2.3	10.1	2.5	98	0.5	8.5	1.7	96
Herstmonceux	7840					0.7	4.9	1.1	100	1.0	9.6	1.0	100	1.3	11.2	2.8	99	0.3	2.5	1.3	96
Potsdam_3	7841					1.4	7.8	3.8	100	1.4	16.4	4.5	99	1.7	11.2	5.2	98	1.0	16.2	8.0	96
Grasse_MEO	7845					2.8	6.4	1.6	100	2.9	14.4	4.0	99	3.2	10.4	3.0	97
Matera_MLRO	7941					1.4	5.9	1.6	100	1.6	9.4	6.1	100			4.9	99			4.2	97
Wettzell	8834					0.8	5.9	1.6	100	0.9	11.9	1.9	100	10.5	49.3	4.7	97	0.3	14.7	3.4	97