Catalog
Dataset Size Last Modified
     Folder   2010/Netcdf/ARCHIVE_20101011/SpectrumWidth/13.55/    --
           20101011-000100.netcdf.gz  11.21 Kbytes 2010-10-22T19:59:37.104Z
           20101011-000208.netcdf.gz  11.11 Kbytes 2010-10-22T19:59:32.165Z
           20101011-000315.netcdf.gz  11.13 Kbytes 2010-10-22T19:59:37.286Z
           20101011-000423.netcdf.gz  10.70 Kbytes 2010-10-22T19:59:36.594Z
           20101011-000531.netcdf.gz  10.88 Kbytes 2010-10-22T19:59:29.610Z
           20101011-000643.netcdf.gz  9.911 Kbytes 2010-10-22T19:59:33.788Z
           20101011-000750.netcdf.gz  10.11 Kbytes 2010-10-22T19:59:35.279Z
           20101011-000855.netcdf.gz  10.13 Kbytes 2010-10-22T19:59:36.541Z
           20101011-001000.netcdf.gz  10.33 Kbytes 2010-10-22T19:59:37.858Z
           20101011-001105.netcdf.gz  10.53 Kbytes 2010-10-22T19:59:32.561Z
           20101011-001210.netcdf.gz  10.74 Kbytes 2010-10-22T19:59:39.907Z
           20101011-001315.netcdf.gz  11.07 Kbytes 2010-10-22T19:59:37.163Z
           20101011-001420.netcdf.gz  11.32 Kbytes 2010-10-22T19:59:38.916Z
           20101011-001528.netcdf.gz  11.59 Kbytes 2010-10-22T19:59:32.862Z
           20101011-001636.netcdf.gz  12.39 Kbytes 2010-10-22T19:59:33.503Z
           20101011-001748.netcdf.gz  12.51 Kbytes 2010-10-22T19:59:31.144Z
           20101011-001856.netcdf.gz  12.95 Kbytes 2010-10-22T19:59:38.346Z
           20101011-002003.netcdf.gz  13.49 Kbytes 2010-10-22T19:59:35.418Z
           20101011-002111.netcdf.gz  14.09 Kbytes 2010-10-22T19:59:31.820Z
           20101011-002218.netcdf.gz  14.50 Kbytes 2010-10-22T19:59:35.657Z
           20101011-002326.netcdf.gz  15.26 Kbytes 2010-10-22T19:59:29.898Z
           20101011-002551.netcdf.gz  16.59 Kbytes 2010-10-22T19:59:33.660Z
           20101011-002701.netcdf.gz  16.98 Kbytes 2010-10-22T19:59:34.349Z
           20101011-002813.netcdf.gz  17.17 Kbytes 2010-10-22T19:59:31.060Z
           20101011-002923.netcdf.gz  17.60 Kbytes 2010-10-22T19:59:35.498Z
           20101011-003030.netcdf.gz  17.93 Kbytes 2010-10-22T19:59:29.756Z
           20101011-003137.netcdf.gz  18.09 Kbytes 2010-10-22T19:59:28.616Z
           20101011-003245.netcdf.gz  18.48 Kbytes 2010-10-22T19:59:35.945Z
           20101011-003352.netcdf.gz  18.62 Kbytes 2010-10-22T19:59:31.215Z
           20101011-003500.netcdf.gz  18.90 Kbytes 2010-10-22T19:59:39.103Z
           20101011-003607.netcdf.gz  18.89 Kbytes 2010-10-22T19:59:39.536Z
           20101011-003715.netcdf.gz  18.84 Kbytes 2010-10-22T19:59:32.340Z
           20101011-003825.netcdf.gz  18.97 Kbytes 2010-10-22T19:59:34.084Z
           20101011-003935.netcdf.gz  19.09 Kbytes 2010-10-22T19:59:31.704Z
           20101011-004045.netcdf.gz  19.36 Kbytes 2010-10-22T19:59:38.283Z
           20101011-004155.netcdf.gz  19.70 Kbytes 2010-10-22T19:59:29.190Z
           20101011-004305.netcdf.gz  19.81 Kbytes 2010-10-22T19:59:33.050Z
           20101011-004415.netcdf.gz  20.24 Kbytes 2010-10-22T19:59:29.050Z
           20101011-004525.netcdf.gz  16.55 Kbytes 2010-10-22T19:59:37.221Z
           20101011-004635.netcdf.gz  16.61 Kbytes 2010-10-22T19:59:38.610Z
           20101011-004745.netcdf.gz  16.73 Kbytes 2010-10-22T19:59:35.970Z
           20101011-004855.netcdf.gz  17.02 Kbytes 2010-10-22T19:59:35.315Z
           20101011-005005.netcdf.gz  17.54 Kbytes 2010-10-22T19:59:29.082Z
           20101011-005115.netcdf.gz  17.3 Kbytes 2010-10-22T19:59:38.993Z
           20101011-005225.netcdf.gz  17.74 Kbytes 2010-10-22T19:59:33.739Z
           20101011-005335.netcdf.gz  17.66 Kbytes 2010-10-22T19:59:35.911Z
           20101011-005520.netcdf.gz  18.11 Kbytes 2010-10-22T19:59:29.342Z
           20101011-005630.netcdf.gz  18.29 Kbytes 2010-10-22T19:59:38.851Z
           20101011-005740.netcdf.gz  18.47 Kbytes 2010-10-22T19:59:38.386Z
           20101011-005850.netcdf.gz  18.49 Kbytes 2010-10-22T19:59:35.998Z
           20101011-010000.netcdf.gz  18.57 Kbytes 2010-10-22T19:59:39.430Z
           20101011-010110.netcdf.gz  18.61 Kbytes 2010-10-22T19:59:38.117Z
           20101011-010220.netcdf.gz  18.57 Kbytes 2010-10-22T19:59:31.899Z
           20101011-010330.netcdf  191.7 Kbytes 2025-08-30T10:08:29.586Z
           20101011-010330.netcdf.gz  18.47 Kbytes 2010-10-22T19:59:30.209Z
           20101011-010440.netcdf.gz  18.43 Kbytes 2010-10-22T19:59:30.570Z
           20101011-010550.netcdf.gz  18.76 Kbytes 2010-10-22T19:59:33.831Z
           20101011-010827.netcdf.gz  18.75 Kbytes 2010-10-22T19:59:31.281Z
           20101011-010937.netcdf.gz  18.70 Kbytes 2010-10-22T19:59:30.397Z
           20101011-011047.netcdf.gz  18.88 Kbytes 2010-10-22T19:59:29.311Z
           20101011-011157.netcdf.gz  18.62 Kbytes 2010-10-22T19:59:30.741Z
           20101011-011307.netcdf.gz  18.82 Kbytes 2010-10-22T19:59:37.453Z
           20101011-011417.netcdf.gz  18.78 Kbytes 2010-10-22T19:59:37.774Z
           20101011-011527.netcdf  191.7 Kbytes 2025-08-30T10:08:17.442Z
           20101011-011527.netcdf.gz  18.77 Kbytes 2010-10-22T19:59:39.381Z
           20101011-011637.netcdf.gz  18.85 Kbytes 2010-10-22T19:59:38.557Z
           20101011-011747.netcdf.gz  18.44 Kbytes 2010-10-22T19:59:39.745Z
           20101011-011857.netcdf.gz  18.47 Kbytes 2010-10-22T19:59:38.811Z
           20101011-012007.netcdf.gz  18.52 Kbytes 2010-10-22T19:59:37.012Z
           20101011-012117.netcdf.gz  18.28 Kbytes 2010-10-22T19:59:29.441Z
           20101011-012227.netcdf.gz  18.18 Kbytes 2010-10-22T19:59:38.249Z
           20101011-012337.netcdf.gz  18.03 Kbytes 2010-10-22T19:59:39.309Z
           20101011-012447.netcdf.gz  17.91 Kbytes 2010-10-22T19:59:32.046Z
           20101011-012557.netcdf.gz  17.75 Kbytes 2010-10-22T19:59:30.681Z
           20101011-012707.netcdf.gz  17.89 Kbytes 2010-10-22T19:59:32.633Z
           20101011-012817.netcdf.gz  18.08 Kbytes 2010-10-22T19:59:28.838Z
           20101011-012927.netcdf.gz  18.11 Kbytes 2010-10-22T19:59:33.927Z
           20101011-013037.netcdf.gz  18.12 Kbytes 2010-10-22T19:59:30.452Z
           20101011-013147.netcdf.gz  18.28 Kbytes 2010-10-22T19:59:36.353Z
           20101011-013257.netcdf.gz  18.26 Kbytes 2010-10-22T19:59:29.847Z
           20101011-013407.netcdf.gz  18.19 Kbytes 2010-10-22T19:59:39.196Z
           20101011-013517.netcdf.gz  18.01 Kbytes 2010-10-22T19:59:38.444Z
           20101011-013627.netcdf.gz  17.96 Kbytes 2010-10-22T19:59:29.653Z
           20101011-013737.netcdf.gz  17.84 Kbytes 2010-10-22T19:59:38.014Z
           20101011-013847.netcdf.gz  17.7 Kbytes 2010-10-22T19:59:34.881Z
           20101011-013957.netcdf.gz  17.62 Kbytes 2010-10-22T19:59:36.973Z
           20101011-014225.netcdf.gz  17.46 Kbytes 2010-10-22T19:59:39.829Z
           20101011-014335.netcdf.gz  17.27 Kbytes 2010-10-22T19:59:34.146Z
           20101011-014445.netcdf.gz  17.26 Kbytes 2010-10-22T19:59:30.288Z
           20101011-014555.netcdf.gz  17.05 Kbytes 2010-10-22T19:59:28.755Z
           20101011-014705.netcdf.gz  17.0 Kbytes 2010-10-22T19:59:33.598Z
           20101011-014815.netcdf.gz  16.86 Kbytes 2010-10-22T19:59:38.694Z
           20101011-014925.netcdf.gz  16.68 Kbytes 2010-10-22T19:59:35.452Z
           20101011-015035.netcdf.gz  16.46 Kbytes 2010-10-22T19:59:35.388Z
           20101011-015145.netcdf.gz  16.65 Kbytes 2010-10-22T19:59:33.102Z
           20101011-015255.netcdf.gz  16.57 Kbytes 2010-10-22T19:59:31.432Z
           20101011-015405.netcdf.gz  16.5 Kbytes 2010-10-22T19:59:36.062Z
           20101011-015515.netcdf.gz  16.48 Kbytes 2010-10-22T19:59:33.998Z
           20101011-015625.netcdf.gz  16.39 Kbytes 2010-10-22T19:59:35.025Z
           20101011-015735.netcdf.gz  16.51 Kbytes 2010-10-22T19:59:30.968Z
           20101011-015845.netcdf.gz  16.38 Kbytes 2010-10-22T19:59:34.516Z
           20101011-015955.netcdf.gz  16.22 Kbytes 2010-10-22T19:59:35.802Z
           20101011-020105.netcdf.gz  16.2 Kbytes 2010-10-22T19:59:34.382Z
           20101011-020215.netcdf.gz  16.25 Kbytes 2010-10-22T19:59:32.007Z
           20101011-020335.netcdf.gz  16.21 Kbytes 2010-10-22T19:59:29.529Z
           20101011-020445.netcdf.gz  16.20 Kbytes 2010-10-22T19:59:36.653Z
           20101011-020745.netcdf.gz  15.85 Kbytes 2010-10-22T19:59:33.303Z
           20101011-020855.netcdf.gz  15.85 Kbytes 2010-10-22T19:59:37.318Z
           20101011-021005.netcdf.gz  15.73 Kbytes 2010-10-22T19:59:36.204Z
           20101011-021115.netcdf.gz  15.80 Kbytes 2010-10-22T19:59:30.241Z
           20101011-021225.netcdf.gz  15.76 Kbytes 2010-10-22T19:59:34.039Z
           20101011-021335.netcdf.gz  15.71 Kbytes 2010-10-22T19:59:30.126Z
           20101011-021445.netcdf.gz  15.58 Kbytes 2010-10-22T19:59:33.465Z
           20101011-021555.netcdf.gz  15.66 Kbytes 2010-10-22T19:59:35.605Z
           20101011-021705.netcdf.gz  16.53 Kbytes 2010-10-22T19:59:39.273Z
           20101011-021815.netcdf.gz  15.57 Kbytes 2010-10-22T19:59:30.139Z
           20101011-021925.netcdf.gz  15.85 Kbytes 2010-10-22T19:59:36.627Z
           20101011-022035.netcdf.gz  15.74 Kbytes 2010-10-22T19:59:31.019Z
           20101011-022145.netcdf.gz  15.73 Kbytes 2010-10-22T19:59:38.480Z
           20101011-022255.netcdf.gz  15.81 Kbytes 2010-10-22T19:59:32.082Z
           20101011-022405.netcdf.gz  15.77 Kbytes 2010-10-22T19:59:37.727Z
           20101011-022515.netcdf.gz  15.73 Kbytes 2010-10-22T19:59:33.262Z
           20101011-022625.netcdf.gz  15.90 Kbytes 2010-10-22T19:59:36.153Z
           20101011-022735.netcdf.gz  15.97 Kbytes 2010-10-22T19:59:28.796Z
           20101011-022845.netcdf.gz  15.82 Kbytes 2010-10-22T19:59:34.177Z
           20101011-022955.netcdf.gz  15.79 Kbytes 2010-10-22T19:59:30.358Z
           20101011-023105.netcdf.gz  15.60 Kbytes 2010-10-22T19:59:32.725Z
           20101011-023215.netcdf.gz  15.50 Kbytes 2010-10-22T19:59:39.654Z
           20101011-023325.netcdf.gz  15.3 Kbytes 2010-10-22T19:59:37.255Z
           20101011-023435.netcdf.gz  15.25 Kbytes 2010-10-22T19:59:40.028Z
           20101011-023545.netcdf.gz  15.07 Kbytes 2010-10-22T19:59:35.698Z
           20101011-023655.netcdf.gz  15.07 Kbytes 2010-10-22T19:59:36.761Z
           20101011-023805.netcdf.gz  15.04 Kbytes 2010-10-22T19:59:31.517Z
           20101011-023915.netcdf.gz  14.95 Kbytes 2010-10-22T19:59:37.514Z
           20101011-024025.netcdf.gz  14.99 Kbytes 2010-10-22T19:59:32.446Z
           20101011-024135.netcdf.gz  14.94 Kbytes 2010-10-22T19:59:35.561Z
           20101011-024245.netcdf.gz  14.79 Kbytes 2010-10-22T19:59:29.684Z
           20101011-024355.netcdf.gz  14.76 Kbytes 2010-10-22T19:59:39.348Z
           20101011-024505.netcdf.gz  14.58 Kbytes 2010-10-22T19:59:37.051Z
           20101011-024615.netcdf.gz  14.73 Kbytes 2010-10-22T19:59:29.155Z
           20101011-024725.netcdf.gz  14.67 Kbytes 2010-10-22T19:59:32.475Z
           20101011-024835.netcdf.gz  14.58 Kbytes 2010-10-22T19:59:39.702Z
           20101011-024945.netcdf.gz  14.38 Kbytes 2010-10-22T19:59:29.569Z
           20101011-025055.netcdf.gz  18.78 Kbytes 2010-10-22T19:59:30.156Z
           20101011-025205.netcdf.gz  18.58 Kbytes 2010-10-22T19:59:28.583Z
           20101011-025315.netcdf.gz  18.76 Kbytes 2010-10-22T19:59:36.903Z
           20101011-025425.netcdf.gz  18.84 Kbytes 2010-10-22T19:59:30.880Z
           20101011-025535.netcdf.gz  18.78 Kbytes 2010-10-22T19:59:33.166Z
           20101011-025645.netcdf.gz  18.91 Kbytes 2010-10-22T19:59:29.244Z
           20101011-025755.netcdf.gz  18.89 Kbytes 2010-10-22T19:59:32.275Z
           20101011-025905.netcdf.gz  18.73 Kbytes 2010-10-22T19:59:39.796Z
           20101011-030015.netcdf.gz  18.75 Kbytes 2010-10-22T19:59:31.403Z
           20101011-030125.netcdf.gz  18.64 Kbytes 2010-10-22T19:59:29.277Z
           20101011-030310.netcdf.gz  18.31 Kbytes 2010-10-22T19:59:29.931Z
           20101011-030420.netcdf.gz  18.37 Kbytes 2010-10-22T19:59:32.416Z
           20101011-030530.netcdf.gz  18.51 Kbytes 2010-10-22T19:59:30.316Z
           20101011-030640.netcdf.gz  18.48 Kbytes 2010-10-22T19:59:35.772Z
           20101011-030750.netcdf.gz  18.46 Kbytes 2010-10-22T19:59:36.944Z
           20101011-030900.netcdf.gz  18.38 Kbytes 2010-10-22T19:59:30.785Z
           20101011-031010.netcdf.gz  18.59 Kbytes 2010-10-22T19:59:32.108Z
           20101011-031120.netcdf.gz  18.92 Kbytes 2010-10-22T19:59:36.791Z
           20101011-031230.netcdf.gz  18.83 Kbytes 2010-10-22T19:59:28.663Z
           20101011-031340.netcdf.gz  19.05 Kbytes 2010-10-22T19:59:32.384Z
           20101011-031450.netcdf.gz  19.10 Kbytes 2010-10-22T19:59:36.421Z
           20101011-031600.netcdf.gz  19.42 Kbytes 2010-10-22T19:59:38.199Z
           20101011-031710.netcdf.gz  19.69 Kbytes 2010-10-22T19:59:36.715Z
           20101011-031820.netcdf.gz  19.64 Kbytes 2010-10-22T19:59:30.092Z
           20101011-031930.netcdf.gz  14.92 Kbytes 2010-10-22T19:59:32.514Z
           20101011-032207.netcdf.gz  15.18 Kbytes 2010-10-22T19:59:33.882Z
           20101011-032317.netcdf.gz  15.47 Kbytes 2010-10-22T19:59:32.192Z
           20101011-032427.netcdf.gz  15.51 Kbytes 2010-10-22T19:59:34.992Z
           20101011-032537.netcdf.gz  15.70 Kbytes 2010-10-22T19:59:34.308Z
           20101011-032647.netcdf.gz  15.77 Kbytes 2010-10-22T19:59:38.643Z
           20101011-032757.netcdf.gz  15.93 Kbytes 2010-10-22T19:59:31.976Z
           20101011-032907.netcdf.gz  16.27 Kbytes 2010-10-22T19:59:39.948Z
           20101011-033135.netcdf.gz  16.63 Kbytes 2010-10-22T19:59:31.357Z
           20101011-033245.netcdf.gz  16.78 Kbytes 2010-10-22T19:59:32.801Z
           20101011-033355.netcdf.gz  17.03 Kbytes 2010-10-22T19:59:34.759Z
           20101011-033537.netcdf.gz  15.37 Kbytes 2010-10-22T19:59:37.829Z
           20101011-033647.netcdf.gz  15.48 Kbytes 2010-10-22T19:59:31.947Z
           20101011-033757.netcdf.gz  15.32 Kbytes 2010-10-22T19:59:39.463Z
           20101011-033907.netcdf.gz  15.38 Kbytes 2010-10-22T19:59:28.949Z
           20101011-034017.netcdf.gz  15.51 Kbytes 2010-10-22T19:59:29.122Z
           20101011-034127.netcdf.gz  15.39 Kbytes 2010-10-22T19:59:37.377Z
           20101011-034237.netcdf.gz  15.53 Kbytes 2010-10-22T19:59:35.253Z
           20101011-034347.netcdf.gz  15.54 Kbytes 2010-10-22T19:59:37.929Z
           20101011-034457.netcdf.gz  15.63 Kbytes 2010-10-22T19:59:34.924Z
           20101011-034607.netcdf.gz  15.54 Kbytes 2010-10-22T19:59:34.831Z
           20101011-034717.netcdf.gz  15.57 Kbytes 2010-10-22T19:59:39.494Z
           20101011-034827.netcdf.gz  15.75 Kbytes 2010-10-22T19:59:36.829Z
           20101011-034937.netcdf.gz  15.70 Kbytes 2010-10-22T19:59:33.387Z
           20101011-035047.netcdf.gz  15.79 Kbytes 2010-10-22T19:59:32.601Z
           20101011-035157.netcdf.gz  15.74 Kbytes 2010-10-22T19:59:31.480Z
           20101011-035307.netcdf.gz  15.63 Kbytes 2010-10-22T19:59:35.869Z
           20101011-035535.netcdf.gz  15.59 Kbytes 2010-10-22T19:59:35.215Z
           20101011-035645.netcdf.gz  15.65 Kbytes 2010-10-22T19:59:37.626Z
           20101011-035755.netcdf.gz  15.54 Kbytes 2010-10-22T19:59:29.010Z
           20101011-035905.netcdf.gz  15.48 Kbytes 2010-10-22T19:59:30.041Z
           20101011-040015.netcdf.gz  15.62 Kbytes 2010-10-22T19:59:35.148Z
           20101011-040150.netcdf.gz  16.19 Kbytes 2010-10-22T19:59:38.774Z
           20101011-040300.netcdf.gz  16.19 Kbytes 2010-10-22T19:59:34.604Z
           20101011-040410.netcdf.gz  16.08 Kbytes 2010-10-22T19:59:38.890Z
           20101011-040520.netcdf.gz  15.88 Kbytes 2010-10-22T19:59:31.181Z
           20101011-040630.netcdf.gz  15.77 Kbytes 2010-10-22T19:59:40.061Z
           20101011-040740.netcdf.gz  15.80 Kbytes 2010-10-22T19:59:29.713Z
           20101011-040857.netcdf.gz  15.68 Kbytes 2010-10-22T19:59:38.167Z
           20101011-041007.netcdf.gz  15.58 Kbytes 2010-10-22T19:59:30.818Z
           20101011-041117.netcdf.gz  15.64 Kbytes 2010-10-22T19:59:32.817Z
           20101011-041227.netcdf.gz  15.63 Kbytes 2010-10-22T19:59:35.738Z
           20101011-041402.netcdf.gz  15.49 Kbytes 2010-10-22T19:59:34.244Z
           20101011-041512.netcdf.gz  15.54 Kbytes 2010-10-22T19:59:37.545Z
           20101011-041622.netcdf.gz  15.5 Kbytes 2010-10-22T19:59:36.464Z
           20101011-041732.netcdf.gz  15.38 Kbytes 2010-10-22T19:59:38.410Z
           20101011-041842.netcdf.gz  15.22 Kbytes 2010-10-22T19:59:31.664Z
           20101011-041952.netcdf.gz  15.34 Kbytes 2010-10-22T19:59:38.741Z
           20101011-042127.netcdf.gz  15.53 Kbytes 2010-10-22T19:59:35.193Z
           20101011-042237.netcdf.gz  15.49 Kbytes 2010-10-22T19:59:36.319Z
           20101011-042347.netcdf.gz  15.32 Kbytes 2010-10-22T19:59:36.286Z
           20101011-042457.netcdf.gz  15.47 Kbytes 2010-10-22T19:59:32.216Z
           20101011-042607.netcdf.gz  15.38 Kbytes 2010-10-22T19:59:29.803Z
           20101011-042717.netcdf.gz  15.50 Kbytes 2010-10-22T19:59:39.981Z
           20101011-042827.netcdf.gz  15.57 Kbytes 2010-10-22T19:59:31.589Z
           20101011-042937.netcdf.gz  15.54 Kbytes 2010-10-22T19:59:39.075Z
           20101011-043047.netcdf.gz  15.34 Kbytes 2010-10-22T19:59:38.516Z
           20101011-043157.netcdf.gz  15.44 Kbytes 2010-10-22T19:59:32.241Z
           20101011-043307.netcdf.gz  15.32 Kbytes 2010-10-22T19:59:30.529Z
           20101011-043417.netcdf.gz  15.15 Kbytes 2010-10-22T19:59:37.681Z
           20101011-043535.netcdf.gz  14.92 Kbytes 2010-10-22T19:59:36.024Z
           20101011-043645.netcdf.gz  14.81 Kbytes 2010-10-22T19:59:38.320Z
           20101011-043755.netcdf.gz  14.50 Kbytes 2010-10-22T19:59:30.608Z
           20101011-043905.netcdf.gz  14.34 Kbytes 2010-10-22T19:59:34.682Z
           20101011-044015.netcdf.gz  19.01 Kbytes 2010-10-22T19:59:31.739Z
           20101011-141311.netcdf.gz  5.304 Kbytes 2010-10-22T19:59:37.965Z
           20101011-141334.netcdf.gz  1.816 Kbytes 2010-10-22T19:59:30.933Z
           20101011-141419.netcdf.gz  5.404 Kbytes 2010-10-22T19:59:37.188Z
           20101011-141504.netcdf.gz  669.0 bytes 2010-10-22T19:59:38.067Z
           20101011-143755.netcdf.gz  5.273 Kbytes 2010-10-22T19:59:39.596Z