Article(id=1322940843597890333, tenantId=1146029695717560320, journalId=1281212831689347082, issueId=1322940717152215106, articleNumber=null, orderNo=null, doi=10.14075/j.jgg.2024.07.317, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1720108800000, receivedDateStr=2024-07-05, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1793343276166, onlineDateStr=2026-10-30, pubDate=1744646400000, pubDateStr=2025-04-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793343276166, onlineIssueDateStr=2026-10-30, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793343276166, creator=13701087609, updateTime=1793343276166, updator=13701087609, issue=Issue{id=1322940717152215106, tenantId=1146029695717560320, journalId=1281212831689347082, year='2025', volume='45', issue='4', pageStart='331', pageEnd='440', issueExtLink='null', onlineDate='null', pubDate='1744646400000', pubDateStr='2025-04-15', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793343246019, creator='13701087609', updateTime=1793343246019, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=331, endPage=338, ext={EN=ArticleExt(id=1322940844357059358, articleId=1322940843597890333, tenantId=1146029695717560320, journalId=1281212831689347082, language=EN, title=Time-Varying Analysis and Prediction of Geocentric Motion, columnId=null, journalTitle=Journal of Geodesy and Geodynamics, columnName=null, runingTitle=null, highlight=null, articleAbstract=
This paper uses the time series of the geocentric motion provided by the Center for Space Research at the University of Texas at Austin as experimental data. First, empirical mode decomposition (EMD) is applied to the data for noise reduction. Then, fast Fourier transform (FFT) and continuous wavelet transform (CWT) are utilized to perform frequency domain transformation, power spectrum analysis, and extraction of periodic terms. Finally, an autoregressive integrated moving average (ARIMA) model and exponential smoothing method are employed to forecast the geocentric motion for the next 20 months. The results indicate that the amplitude and phase of the annual term extracted using FFT are quite close to previous studies on the geocentric motion. The ARIMA model provides better predictions for the Y-direction motion of the geocentric motion over the next 20 months, while exponential smoothing method offers more accurate predictions for the X and Z directions.
, authors=Erhu WEI
1, Junjie WU
1, Yunlong ZHANG
2, Yile LUO
1, Xiancai ZOU
1, Xiaojing TIAN
3, Jingnan LIU
4, authorsList=Erhu WEI, Junjie WU, Yunlong ZHANG, Yile LUO, Xiancai ZOU, Xiaojing TIAN, Jingnan LIU, authorCompany=null, correspAuthors=null, authorNote=
WEI Erhu, PhD, professor, PhD supervisor, majors in space geodesy and navigation, E-mail: ehwei@sgg.whu.edu.cn
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All rights reserved. Unauthorized reproduction is prohibited., copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1322940854830236503, articleId=1322940843597890333, tenantId=1146029695717560320, journalId=1281212831689347082, language=CN, title=地心运动的时变分析与预报, columnId=1322506169105633839, journalTitle=大地测量与地球动力学, columnName=现代大地测量, runingTitle=null, highlight=null, articleAbstract=
以美国德克萨斯大学空间研究中心提供的地心运动时间序列为实验数据,首先采用经验模态分解(empirical mode decomposition, EMD)对数据进行降噪处理;然后利用快速傅里叶变换(fast Fourier transform, FFT)和连续小波变换(continuous wavelet transform, CWT)对该数据进行频域转换、功率谱分析和周期项提取;最后采用自回归积分滑动平均(autoregressive integrated moving average, ARIMA)模型和指数平滑法对未来20个月的地心运动进行预报。结果表明,利用FFT提取的周年项的振幅和相位与以往的地心运动研究较为接近;ARIMA模型对于Y方向20个月内的地心运动预测结果较好,指数平滑法对X、Z方向的地心运动预测结果更优。
, authors=魏二虎
1, 吴俊杰
1, 张云龙
2, 罗一乐
1, 邹贤才
1, 田晓静
3, 刘经南
4, authorsList=魏二虎, 吴俊杰, 张云龙, 罗一乐, 邹贤才, 田晓静, 刘经南, authorCompany=null, correspAuthors=null, authorNote=
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版权所有,未经授权,不得转载。, copyrightOwner=大地测量与地球动力学编辑部, extLink=null, articleAbsUrl=null, sourceXml=/mrHarFa7uQAfnRLS7RgQQ==, magXml=MXpuTmHeGvMo1eeI/GF1ag==, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=dQdFeEbeinThXqYCz9Z6Kw==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=egT+Xqzr9mb8n1p4vWUzGw==, mapNumber=null, fund=null)}, authors=[Author(id=1322940856998691688, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=ehwei@sgg.whu.edu.cn, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1322940859024540522, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, authorId=1322940856998691688, language=EN, stringName=Erhu WEI, firstName=Erhu, middleName=null, lastName=WEI, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, address=1 School of Geodesy and Geomatics, Wuhan University, 129 Luoyu Road, Wuhan 430079, China, bio={"content":"
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The time series in X direction after detrending, figureFileSmall=vRr5Jw1RlxFabtLIvxrjTg==, figureFileBig=mT0TL6FK7w3VB96E4L/u4g==, tableContent=null), ArticleFig(id=1322940873050293170, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, language=CN, label=图4, caption=
去趋势项后的X方向时间序列, figureFileSmall=vRr5Jw1RlxFabtLIvxrjTg==, figureFileBig=mT0TL6FK7w3VB96E4L/u4g==, tableContent=null), ArticleFig(id=1322940873125790643, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, language=EN, label=Fig. 5, caption=
The time series in Y direction after detrending, figureFileSmall=BR4PaAoiSP11LBaT7DM6HQ==, figureFileBig=mA7Vg5eFUQU9E0QThPaO5Q==, tableContent=null), ArticleFig(id=1322940873197093812, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, language=CN, label=图5, caption=
去趋势项后的Y方向时间序列, figureFileSmall=BR4PaAoiSP11LBaT7DM6HQ==, figureFileBig=mA7Vg5eFUQU9E0QThPaO5Q==, tableContent=null), ArticleFig(id=1322940873272591285, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, language=EN, label=Fig. 6, caption=
The time series in Z direction after detrending, figureFileSmall=OTi3YnVjQnBVHCtY96kFkw==, figureFileBig=wytcl/U5C0uNJgYT5bnslQ==, tableContent=null), ArticleFig(id=1322940873339700150, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, language=CN, label=图6, caption=
去趋势项后的Z方向时间序列, figureFileSmall=OTi3YnVjQnBVHCtY96kFkw==, figureFileBig=wytcl/U5C0uNJgYT5bnslQ==, tableContent=null), ArticleFig(id=1322940873411003319, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, language=EN, label=Fig. 7, caption=
Power spectral density in X direction, figureFileSmall=y9OejBSfzOBTtKzDTZlsjA==, figureFileBig=XWvpimAxr0gIZTho4KuWWA==, tableContent=null), ArticleFig(id=1322940873473917880, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, language=CN, label=图7, caption=
X方向功率谱密度, figureFileSmall=y9OejBSfzOBTtKzDTZlsjA==, figureFileBig=XWvpimAxr0gIZTho4KuWWA==, tableContent=null), ArticleFig(id=1322940873557803961, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, language=EN, label=Fig. 8, caption=
Power spectral density in Y direction, figureFileSmall=a2B6VYfbQgfldBzw/oRkTQ==, figureFileBig=12t+lg7w6cBiXwqDll6GkQ==, tableContent=null), ArticleFig(id=1322940873641690042, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, language=CN, label=图8, caption=
Y方向功率谱密度, figureFileSmall=a2B6VYfbQgfldBzw/oRkTQ==, figureFileBig=12t+lg7w6cBiXwqDll6GkQ==, tableContent=null), ArticleFig(id=1322940873717187515, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, language=EN, label=Fig. 9, caption=
Power spectral density in Z direction, figureFileSmall=/PVCYIzadtafJEvGFUiG1g==, figureFileBig=Aisl8Uo3UiL7WnFSw4/nSg==, tableContent=null), ArticleFig(id=1322940873796879294, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, language=CN, label=图9, caption=
Z方向功率谱密度, figureFileSmall=/PVCYIzadtafJEvGFUiG1g==, figureFileBig=Aisl8Uo3UiL7WnFSw4/nSg==, tableContent=null), ArticleFig(id=1322940873868182463, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, language=EN, label=Fig. 10, caption=
CWT results in X direction, figureFileSmall=vpMZLmk9aQPdq449+pfLyw==, figureFileBig=9Qp/p1TfiVd12wLZYgDwZw==, tableContent=null), ArticleFig(id=1322940873952068544, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, language=CN, label=图10, caption=
X方向CWT结果, figureFileSmall=vpMZLmk9aQPdq449+pfLyw==, figureFileBig=9Qp/p1TfiVd12wLZYgDwZw==, tableContent=null), ArticleFig(id=1322940874023371713, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, language=EN, label=Fig. 11, caption=
CWT results in Y direction, figureFileSmall=5zORD64TH9uFsd+tL/7ylg==, figureFileBig=0J9t3vLCyN1b6D/Q5Pk+Zg==, tableContent=null), ArticleFig(id=1322940874086286274, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, language=CN, label=图11, caption=
Y方向CWT结果, figureFileSmall=5zORD64TH9uFsd+tL/7ylg==, figureFileBig=0J9t3vLCyN1b6D/Q5Pk+Zg==, tableContent=null), ArticleFig(id=1322940874170172356, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, language=EN, label=Fig. 12, caption=
CWT results in Z direction, figureFileSmall=pY0F3j7nnAJqr8XW62Vnwg==, figureFileBig=LATwYAnnlpD3n42uheEOcg==, tableContent=null), ArticleFig(id=1322940874254058437, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, language=CN, label=图12, caption=
Z方向CWT结果, figureFileSmall=pY0F3j7nnAJqr8XW62Vnwg==, figureFileBig=LATwYAnnlpD3n42uheEOcg==, tableContent=null), ArticleFig(id=1322940874316972998, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, language=EN, label=Fig. 13, caption=
Forecast results of ARIMA model in X direction, figureFileSmall=mNSMOIfUwhVA2Ki/ted7zg==, figureFileBig=BSnwt0TwEzJyIynidUg8qw==, tableContent=null), ArticleFig(id=1322940874421830599, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, language=CN, label=图13, caption=
ARIMA模型X方向预测结果, figureFileSmall=mNSMOIfUwhVA2Ki/ted7zg==, figureFileBig=BSnwt0TwEzJyIynidUg8qw==, tableContent=null), ArticleFig(id=1322940874497328072, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, language=EN, label=Fig. 14, caption=
Forecast results of ARIMA model in Y direction, figureFileSmall=D1zpCWzyIalTRF4e/bBdTA==, figureFileBig=gGvpcY4BwsvJkOWFCfiriQ==, tableContent=null), ArticleFig(id=1322940874585408457, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, language=CN, label=图14, caption=
ARIMA模型Y方向预测结果, figureFileSmall=D1zpCWzyIalTRF4e/bBdTA==, figureFileBig=gGvpcY4BwsvJkOWFCfiriQ==, tableContent=null), ArticleFig(id=1322940874652517322, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, language=EN, label=Fig. 15, caption=
Forecast results of ARIMA model in Z direction, figureFileSmall=bnJ7ivzbG90XxMDKBYOubg==, figureFileBig=G3/aQTgWUGmnL+1AtDAtPA==, tableContent=null), ArticleFig(id=1322940874728014795, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, language=CN, label=图15, caption=
ARIMA模型Z方向预测结果, figureFileSmall=bnJ7ivzbG90XxMDKBYOubg==, figureFileBig=G3/aQTgWUGmnL+1AtDAtPA==, tableContent=null), ArticleFig(id=1322940874807706572, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, language=EN, label=Fig. 16, caption=
Forecast results of exponential smoothing method in X direction, figureFileSmall=CjubLyB+wjMVXdQYPCCAxw==, figureFileBig=m8Mnc4s89I88d+HiFHYFgQ==, tableContent=null), ArticleFig(id=1322940874870621134, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, language=CN, label=图16, caption=
指数平滑法X方向预测结果, figureFileSmall=CjubLyB+wjMVXdQYPCCAxw==, figureFileBig=m8Mnc4s89I88d+HiFHYFgQ==, tableContent=null), ArticleFig(id=1322940874967090128, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, language=EN, label=Fig. 17, caption=
Forecast results of exponential smoothing method in Z direction, figureFileSmall=PjbXfktJlF3PRsn/czQ6hg==, figureFileBig=18Gbk7Zc6wMbKfW4yNK28g==, tableContent=null), ArticleFig(id=1322940875050976209, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, language=CN, label=图17, caption=
指数平滑法Z方向预测结果, figureFileSmall=PjbXfktJlF3PRsn/czQ6hg==, figureFileBig=18Gbk7Zc6wMbKfW4yNK28g==, tableContent=null), ArticleFig(id=1322940876779029459, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, language=EN, label=Fig. 18, caption=
Power spectral density results, figureFileSmall=N+52qVpEzuz4sKGY0oQH8g==, figureFileBig=z4PS3WUfl8zit1lE+eH0ww==, tableContent=null), ArticleFig(id=1322940877055853524, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, language=CN, label=图18, caption=
功率谱密度计算结果, figureFileSmall=N+52qVpEzuz4sKGY0oQH8g==, figureFileBig=z4PS3WUfl8zit1lE+eH0ww==, tableContent=null), ArticleFig(id=1322940877135545303, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, language=EN, label=Tab. 1, caption=
RMSE and SNR of denoised data
, figureFileSmall=null, figureFileBig=null, tableContent=
| 地心运动方向 | RMSE/mm | SNR/dB |
| X | 1.880 9 | 3.887 4 |
| Y | 1.431 6 | 7.029 6 |
| Z | 3.566 4 | 3.777 8 |
), ArticleFig(id=1322940877475283928, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, language=CN, label=表1, caption=
降噪数据的均方根误差和信噪比
, figureFileSmall=null, figureFileBig=null, tableContent=
| 地心运动方向 | RMSE/mm | SNR/dB |
| X | 1.880 9 | 3.887 4 |
| Y | 1.431 6 | 7.029 6 |
| Z | 3.566 4 | 3.777 8 |
), ArticleFig(id=1322940877559170009, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, language=EN, label=Tab. 2, caption=
Time-frequency characteristics in different directions
, figureFileSmall=null, figureFileBig=null, tableContent=
| 地心运动方向 | 频率/Hz | 周期/d | 振幅/mm |
| X | 0.002 732 2 | 366 | 3.17 |
| 0.002 641 2 | 378 | 2.42 |
| 0.002 914 4 | 343 | 1.97 |
| 9.107 5×10-5 | 10 980 | 1.82 |
| 0.005 555 6 | 180 | 1.52 |
| Y | 0.002 732 2 | 366 | 5.68 |
| 0.002 823 3 | 354 | 4.28 |
| 0.001 821 5 | 549 | 2.57 |
| 0.006 010 9 | 166 | 1.01 |
| 9.107 5×10-5 | 10 980 | 0.94 |
| Z | 0.001 821 5 | 549 | 5.32 |
| 0.001 730 4 | 577 | 4.94 |
| 0.002 732 2 | 366 | 3.97 |
| 9.107 5×10-5 | 10 980 | 3.46 |
| 0.005 555 6 | 180 | 2.86 |
), ArticleFig(id=1322940877903102938, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, language=CN, label=表2, caption=
不同方向的时频特征
, figureFileSmall=null, figureFileBig=null, tableContent=
| 地心运动方向 | 频率/Hz | 周期/d | 振幅/mm |
| X | 0.002 732 2 | 366 | 3.17 |
| 0.002 641 2 | 378 | 2.42 |
| 0.002 914 4 | 343 | 1.97 |
| 9.107 5×10-5 | 10 980 | 1.82 |
| 0.005 555 6 | 180 | 1.52 |
| Y | 0.002 732 2 | 366 | 5.68 |
| 0.002 823 3 | 354 | 4.28 |
| 0.001 821 5 | 549 | 2.57 |
| 0.006 010 9 | 166 | 1.01 |
| 9.107 5×10-5 | 10 980 | 0.94 |
| Z | 0.001 821 5 | 549 | 5.32 |
| 0.001 730 4 | 577 | 4.94 |
| 0.002 732 2 | 366 | 3.97 |
| 9.107 5×10-5 | 10 980 | 3.46 |
| 0.005 555 6 | 180 | 2.86 |
), ArticleFig(id=1322940877978600411, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, language=EN, label=Tab. 3, caption=
The characteristics of annual variations derived from different studies
, figureFileSmall=null, figureFileBig=null, tableContent=
| 测量方法 | X方向振幅/mm | X方向相位/(°) | Y方向振幅/mm | Y方向相位/(°) | Z方向振幅/mm | Z方向相位/(°) |
| GPS OBP GRACE[5] | 2.1 | 242 | 3.4 | 144 | 2.6 | 207 |
| SLR[6] | 2.6 | 225 | 3.1 | 137 | 5.5 | 205 |
| SLR[7] | 2.3 ±0.2 | 290.7±5.7 | 1.0 ±0.3 | 135 ±19 | 0.8 ±0.2 | -235±10 |
| CHAMP[8] | -2.1 | | 3.2 | | 3.1 | |
| GPS网平移法[9] | 5.0 ±0.2 | 307±6 | 1.0±0.3 | 66 ±16 | 6.2±0.3 | 330±8 |
| ECCO[9] | 3.41 | 297 | 4.88 | 294 | 3.67 | 331 |
| 本文 | 3.17 | 248 | 5.68 | 297 | 5.32 | 240 |
), ArticleFig(id=1322940878372864988, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, language=CN, label=表3, caption=
不同研究得出的周年变化特征
, figureFileSmall=null, figureFileBig=null, tableContent=
| 测量方法 | X方向振幅/mm | X方向相位/(°) | Y方向振幅/mm | Y方向相位/(°) | Z方向振幅/mm | Z方向相位/(°) |
| GPS OBP GRACE[5] | 2.1 | 242 | 3.4 | 144 | 2.6 | 207 |
| SLR[6] | 2.6 | 225 | 3.1 | 137 | 5.5 | 205 |
| SLR[7] | 2.3 ±0.2 | 290.7±5.7 | 1.0 ±0.3 | 135 ±19 | 0.8 ±0.2 | -235±10 |
| CHAMP[8] | -2.1 | | 3.2 | | 3.1 | |
| GPS网平移法[9] | 5.0 ±0.2 | 307±6 | 1.0±0.3 | 66 ±16 | 6.2±0.3 | 330±8 |
| ECCO[9] | 3.41 | 297 | 4.88 | 294 | 3.67 | 331 |
| 本文 | 3.17 | 248 | 5.68 | 297 | 5.32 | 240 |
), ArticleFig(id=1322940878712603613, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, language=EN, label=Tab. 4, caption=
Frequency, period, amplitude of annual variations
, figureFileSmall=null, figureFileBig=null, tableContent=
| 地心运动方向 | 频率/Hz | 周期/d | 振幅/mm |
| X | 0.002 77 | 360 | 1.59 |
| Y | 0.002 77 | 360 | 1.79 |
| Z | 0.002 77 | 360 | 2.53 |
), ArticleFig(id=1322940878775518174, tenantId=1146029695717560320, journalId=1281212831689347082, articleId=1322940843597890333, language=CN, label=表4, caption=
周年变化的频率、周期、振幅
, figureFileSmall=null, figureFileBig=null, tableContent=
| 地心运动方向 | 频率/Hz | 周期/d | 振幅/mm |
| X | 0.002 77 | 360 | 1.59 |
| Y | 0.002 77 | 360 | 1.79 |
| Z | 0.002 77 | 360 | 2.53 |
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