version: teqc 2009Oct19 SV+---------|--------|--------|--------|--------|--------|--------|--------+ SV 1| | 1 2|o--- Iooooooooooo- --Iooooooooooo| 2 3| ---oooooooooooooooooooI | 3 4|I IooooooooI --ooooooooooooooo2| 4 5|ooooooooooI- 2Iooooo- --ooooooo| 5 6| --IooooooooooooooooooooI | 6 7|oooo- ---oooI--- I-ooooooooooooo| 7 8|oooooooooI ------- -Moooooooooo| 8 9| -IooooooooooooooooooooI | 9 10|oooooooooI Ioo-II ---oooooooo| 10 11| --IoooooooooooooooooooI- | 11 12| -Ioooooooooooooooooooo-- | 12 13|oI- 2ooooooooooooooooooo| 13 14| --oooooooooooooI- IooooooooooooI | 14 15|ooooooooooooooooo-- ----| 15 16| -IooooooooooooooooooI IIII- | 16 17| IooooooooooooI --oooooooooooooI- | 17 18| -IooooooooooI-- IooooooooooooooII | 18 19| ---IooooooooooooooooooI | 19 20| --ooooooooooooooooooooI2- | 20 21|-------- -IoooooooooooooooooII | 21 22| -IooooooI--- -IooooooooooooooooI | 22 23| ------ IIooooooooooooooooooI | 23 24| | 24 25|oII -MIoooI---- --ooooooooooooooo| 25 26| --ooooooooooooooI- -ooooooooooI | 26 27|-IoooooooooooooooooooooII | 27 28|ooooooooooooI -IoooooooII- Ioooo| 28 29| -ooooooooooooooooooooI | 29 30| --oooooooooooooooooooooI | 30 31| --oooooooooooooooI- IooooooooI- | 31 32| --oooooooooooooooooooII | 32 R 9|cccccccccccc cccccc cccccccccccc|R 9 R 7|~~~~~~~~~~~ ~~~~~~~ c~~~~~~~~~~~|R 7 R10|~~~~~~~~~~~~~~~~~~c cc~~~~~~|R10 R 8|c~~~~~~~~~~~~Ic I~~~~~~~~~ c~~~~~|R 8 R18| I~~~~~~ c~~~~~~~~~~~~~~~~I |R18 R17| ~I c~~~~~~~~~~~~~~~~~~~M |R17 R19| I~~~~~~~~~~ ~~~~~~~~~~~~~~~~M |R19 R11| c~~~~~~~~~~~~~~~~~~~c c~|R11 R20| c~~~~~~~~~~~~ ~~~~~~~~~~~~~~M |R20 R21| L~~~~~~~~~~~~~~ c~~~~~~~~~~~M |R21 R 2| ~~~~~~~~M2 L~~~~~~~~~~~~~2 |R 2 R 3| ~2~~~~~ ~~~~~~~~~~~~~~~~~M |R 3 R13| c~~~~~~~~~~~~~~~c M~~~~~~ |R13 R14| c~~~~~~~~~~~~cc c~~~~~~M2~~ |R14 R15| c~~~~~~~~~~~~ c~~~~~~~~~~~~~ |R15 -dn| 121111 11 211 1212 111 23422 1 1 1 11 |-dn +dn|234232221331211223221 112224332324221124554331 222112311112122331112111|+dn + 0|bbbababbbbbababdddcbaabba9bcbbbbccbbbaacdeeddbaacccaaaa99abbbccdcbbabaaa|+ 0 Pos|oo ooo oooooo |Pos Clk| |Clk +---------|--------|--------|--------|--------|--------|--------|--------+ 00:00:00.000 23:59:30.000 2009 Nov 26 2009 Nov 26 ********************* QC of RINEX file(s) : MALL3300.09O input RnxNAV file(s) : MALL3300.09N MALL3300.09G ********************* 4-character ID : MALL (# = 13444M001) Receiver type : LEICA GRX1200GGPRO (# = 355490) (fw = 7.50) Antenna type : LEIAT504GG LEIS (# = 200554) Time of start of window : 2009 Nov 26 00:00:00.000 Time of end of window : 2009 Nov 26 23:59:30.000 Time line window length : 23.99 hour(s), ticked every 3.0 hour(s) antenna WGS 84 (xyz) : 4919378.8602 225521.6485 4039859.0381 (m) antenna WGS 84 (geo) : N 39 deg 33' 09.47" E 2 deg 37' 29.29" antenna WGS 84 (geo) : 39.552631 deg 2.624803 deg WGS 84 height : 75.9009 m |qc - header| position : 26 m Observation interval : 30.0000 seconds Total satellites w/ obs : 45 NAVSTAR GPS SVs w/o OBS : 1 24 NAVSTAR GPS SVs w/o NAV : 1 24 GLONASS SVs w/o OBS : 1 4 5 6 12 16 22 23 24 GLONASS SVs w/o NAV : 9 7 10 8 18 17 19 11 20 21 2 3 13 14 15 Rx tracking capability : 26 SVs Poss. # of obs epochs : 2880 Epochs w/ observations : 2880 Epochs repeated : 0 (0.00%) Possible obs > 0.0 deg: 30531 Possible obs > 0.0 deg: 30531 Complete obs > 0.0 deg: 27330 Missed obs > 0.0 deg: 3094 Deleted obs > 0.0 deg: 107 Obs w/ SV duplication : 0 (within non-repeated epochs) Moving average MP1 : 0.356593 m Moving average MP2 : 0.379769 m Points in MP moving avg : 50 No. of Rx clock offsets : 0 Total Rx clock drift : 0.000000 ms Rate of Rx clock drift : 0.000 ms/hr Avg time between resets : Inf minute(s) Freq no. and timecode : 2 10917 ffffff Report gap > than : 10.00 minute(s) epochs w/ msec clk slip : 0 other msec mp events : 0 (: 426) {expect ~= 1:50} IOD signifying a slip : >400.0 cm/minute IOD slips < 0.0 deg* : 8 IOD slips > 0.0 deg : 195 IOD or MP slips < 0.0*: 18 IOD or MP slips > 0.0 : 217 * or unknown elevation first epoch last epoch hrs dt #expt #have % mp1 mp2 o/slps SUM 09 11 26 00:00 09 11 26 23:59 24.00 30 30531 27330 90 0.36 0.38 126 Processing parameters are: Receiver tracking capability : 26 SVs Maximum ionospheric rate (L1) : 400.00 cm/min Report data gap greater than : 10.00 min Expected rms of MP1 multipath : 50.00 cm Expected rms of MP2 multipath : 65.00 cm Multipath slip sigma threshold : 4.00 cm % increase in MP rms for C/A | A/S : 100.00 % Points in MP moving averages : 50 Minimum signal to noise for L1 : 0 Minimum signal to noise for L2 : 0 Elevation mask (cutoff) : 0.00 degrees Elevation comparison threshold : 25.00 degrees Orbit path spline fit sample time : 10 min SVs w/ code data for position try : 5 Width of ASCII summary plot : 72 Data indicators on summary plot : yes Do ionospheric observable : yes Do ionospheric derivative : yes Do high-pass ionosphere observable : no Do multipath observables : yes Do 1-ms receiver clock slips : yes Tolerance for 1-ms clock slips : 1.00e-02 ms Do receiver LLI slips : yes Do plot file(s) : yes Observations start : 2009 Nov 26 00:00:00.000 Observations end : 2009 Nov 26 23:59:30.000 Observation interval : 30.0000 second(s) SV #+hor #+mask #reprt #compl L1 L2 P1 P2 CA L2C --- ------ ----- ------ ----- ------ ------ ------ ------ ------ ------ ------ ------ G02 1175 22.80 1175 22.80 1050 1046 1050 1046 0 1046 1050 0 G03 882 41.62 882 41.62 804 800 804 800 0 800 804 0 G04 1115 26.13 1115 26.13 1035 1033 1035 1033 0 1033 1035 0 G05 1076 29.45 1076 29.45 989 986 989 986 0 986 989 0 G06 919 41.61 919 41.61 877 876 877 876 0 876 877 0 G07 1103 27.76 1103 27.76 911 910 911 910 0 910 911 0 G08 1037 33.16 1037 33.16 804 801 804 801 0 801 804 0 G09 904 39.31 904 39.31 874 872 874 872 0 872 874 0 G10 1021 32.70 1021 32.70 928 921 928 921 0 921 928 0 G11 896 42.08 896 42.08 822 818 822 818 0 818 822 0 G12 913 40.74 913 40.74 851 848 851 848 0 848 851 0 G13 874 40.77 874 40.77 853 852 853 852 0 852 853 0 G14 1169 23.58 1169 23.58 1080 1073 1080 1073 0 1073 1080 0 G15 876 41.52 876 41.52 758 756 758 756 0 756 758 0 G16 992 34.41 992 34.41 875 870 875 870 0 870 875 0 G17 1178 22.75 1178 22.75 1095 1092 1095 1092 0 1092 1095 0 G18 1188 22.30 1188 22.30 1084 1078 1084 1078 0 1078 1084 0 G19 879 41.71 879 41.71 763 763 763 763 0 763 763 0 G20 925 40.71 925 40.71 888 885 888 885 0 885 888 0 G21 1061 29.88 1061 29.88 779 777 779 777 0 777 779 0 G22 1148 24.24 1148 24.24 978 970 978 970 0 970 978 0 G23 1001 33.69 1001 33.69 800 798 800 798 0 798 800 0 G25 1132 26.35 1132 26.35 919 914 919 914 0 914 919 0 G26 1123 25.44 1123 25.44 1024 1017 1024 1017 0 1017 1024 0 G27 954 41.00 954 41.00 914 914 914 914 0 914 914 0 G28 1173 24.36 1173 24.36 1047 1030 1047 1030 0 1030 1047 0 G29 865 41.64 865 41.64 846 845 846 845 0 845 846 0 G30 924 39.87 924 39.87 882 879 882 879 0 879 882 0 G31 1131 25.93 1131 25.93 1060 1059 1060 1059 0 1059 1060 0 G32 897 41.55 897 41.55 847 847 847 847 0 847 847 0 R09* 0 0.00 0 0.00 0 0 0 0 0 0 0 0 R07* 0 0.00 0 0.00 0 0 0 0 0 0 0 0 R10* 0 0.00 0 0.00 0 0 0 0 0 0 0 0 R08* 0 0.00 0 0.00 0 0 0 0 0 0 0 0 R18* 0 0.00 0 0.00 0 0 0 0 0 0 0 0 R17* 0 0.00 0 0.00 0 0 0 0 0 0 0 0 R19* 0 0.00 0 0.00 0 0 0 0 0 0 0 0 R11* 0 0.00 0 0.00 0 0 0 0 0 0 0 0 R20* 0 0.00 0 0.00 0 0 0 0 0 0 0 0 R21* 0 0.00 0 0.00 0 0 0 0 0 0 0 0 R02* 0 0.00 0 0.00 0 0 0 0 0 0 0 0 R03* 0 0.00 0 0.00 0 0 0 0 0 0 0 0 R13* 0 0.00 0 0.00 0 0 0 0 0 0 0 0 R14* 0 0.00 0 0.00 0 0 0 0 0 0 0 0 R15* 0 0.00 0 0.00 0 0 0 0 0 0 0 0 * = SV with no NAV info Obs below mask ( 0.00 deg) : 14750 Obs above mask w/ no L1 : 0 Obs above mask w/ no L2 : 107 Obs above mask w/ no P1 | CA : 0 Obs above mask w/ no P2 | L2C : 107 Obs above mask w/ low L1 S/N : 0 Obs above mask w/ low L2 S/N : 0 Obs reported w/ code | phase : 42187 Obs deleted (any reason) : 14857 Obs complete : 27330 No. of Rx clock offsets : 0 Total Rx clock drift : 0.000000 ms Rate of Rx clock drift : 0.000000 ms/hr elev (deg) tot slps 5=% 1|m 15=% 2|m 85 - 90 79 0 0.000000 80 - 85 597 0 0.000000 75 - 80 708 0 0.000000 70 - 75 1027 0 0.000000 65 - 70 1288 0 0.000000 60 - 65 1366 0 0.000000 55 - 60 1380 0 0.000000 50 - 55 1428 0 0.000000 45 - 50 1517 0 0.000000 40 - 45 1714 0 0.000000 35 - 40 1602 0 0.000000 30 - 35 1900 0 0.000000 25 - 30 1987 0 0.000000 20 - 25 2207 0 0.000000 15 - 20 2489 1 0.000000 10 - 15 2611 16 0.000000 = 5 - 10 1997 40 0.000000 ==== 0 - 5 1403 138 0.000000 =================== < 0 0 0 0.000000 MP1 RMS summary (per SV): slips L1 rx L2 rx slips L1 rx L2 rx SV obs> 0 # del MP1 rms [m] < 25 < 25 < 25 > 25 > 25 > 25 G02 1050 4 25.17 0.428401 7 0 1 0 0 0 G03 804 4 45.45 0.175770 4 0 0 0 0 0 G04 1035 2 28.06 0.505807 5 0 0 0 0 0 G05 989 3 31.88 0.366458 2 1 1 0 0 0 G06 877 1 43.60 0.685658 2 0 0 0 0 0 G07 911 1 32.71 0.233432 4 0 1 0 0 0 G08 804 3 41.97 0.268429 2 0 0 0 0 0 G09 874 2 40.76 0.200812 4 0 2 0 0 0 G10 928 7 35.91 0.406665 11 0 1 0 0 0 G11 822 4 45.66 0.178096 3 1 0 0 0 0 G12 851 3 43.73 0.183789 2 0 0 0 0 0 G13 853 1 41.88 0.412896 4 0 2 0 0 0 G14 1080 7 25.48 0.519530 10 0 2 0 0 0 G15 758 2 47.08 0.220278 0 0 0 0 0 0 G16 875 5 38.94 1.093238 26 0 5 0 0 0 G17 1095 3 24.40 0.309883 3 0 1 0 0 0 G18 1084 6 24.27 0.307514 10 0 2 0 0 0 G19 763 0 47.12 0.188903 4 1 2 0 0 0 G20 888 3 42.52 0.322653 1 0 0 0 0 0 G21 779 2 39.36 0.585880 6 0 0 0 0 0 G22 978 8 27.90 0.325142 9 1 2 0 0 0 G23 800 2 41.79 0.245489 6 0 0 0 0 0 G25 919 5 31.38 0.307624 7 0 1 0 0 0 G26 1024 7 27.73 0.412313 6 0 3 0 0 0 G27 914 0 42.75 0.300276 4 0 0 0 0 0 G28 1047 17 27.18 0.561251 26 1 7 0 0 0 G29 846 1 42.69 0.207181 3 0 0 0 0 0 G30 882 3 41.85 0.218632 1 0 1 0 0 0 G31 1060 1 27.56 0.297853 7 0 0 0 0 0 G32 847 0 43.85 0.220846 3 1 1 0 0 0 R09* 1151 1151 0.00 0.000000 0 0 0 0 0 0 R07* 1139 3 0.00 0.500461 0 0 0 0 0 0 R10* 1008 15 0.00 0.270137 0 0 0 0 0 0 R08* 1121 13 0.00 0.449371 3 0 0 0 0 0 R18* 949 3 0.00 0.274002 2 0 0 0 0 0 R17* 850 1 0.00 0.397753 1 0 0 0 0 0 R19* 1026 1 0.00 0.467495 2 0 0 0 0 0 R11* 894 21 0.00 0.179713 0 0 0 0 0 0 R20* 1014 3 0.00 0.229669 1 0 1 0 0 0 R21* 1047 5 0.00 0.234764 1 1 0 0 0 0 R02* 924 7 0.00 0.525529 1 1 1 0 0 0 R03* 869 2 0.00 0.364971 1 0 0 0 0 0 R13* 896 36 0.00 0.236801 1 1 0 0 0 0 R14* 906 12 0.00 0.467383 1 0 0 0 0 0 R15* 956 9 0.00 0.228552 0 0 0 0 0 0 * = SV with no NAV info mean MP1 rms : 0.356593 m total mean elevation : 35.88 degrees # MP1 obs > 0 : 40798 # qc MP1 slips < 25 : 196 # Rvr L1 slips < 25 : 9 # Rvr L2 slips < 25 : 37 # qc MP1 slips > 25 : 0 # Rvr L1 slips > 25 : 0 # Rvr L2 slips > 25 : 0 elev (deg) tot slps 5=% 1|m 15=% 2|m 85 - 90 79 0 0.096545 || 80 - 85 597 0 0.085986 || 75 - 80 708 0 0.099615 || 70 - 75 1027 0 0.095253 || 65 - 70 1288 0 0.102285 || 60 - 65 1366 0 0.119390 || 55 - 60 1380 0 0.119630 || 50 - 55 1428 0 0.138301 ||| 45 - 50 1517 0 0.152343 ||| 40 - 45 1714 0 0.171323 ||| 35 - 40 1602 0 0.206676 |||| 30 - 35 1900 0 0.230310 ||||| 25 - 30 1987 0 0.247434 ||||| 20 - 25 2207 0 0.266363 ||||| 15 - 20 2489 1 0.329808 ||||||| 10 - 15 2611 12 0.538006 ||||||||||| 5 - 10 1997 35 0.699437 ###||||||||||| 0 - 5 1403 134 1.167713 ###################|||| < 0 0 0 0.000000 MP2 RMS summary (per SV): slips L1 rx L2 rx slips L1 rx L2 rx SV obs> 0 # del MP2 rms [m] < 25 < 25 < 25 > 25 > 25 > 25 G02 1050 4 25.17 0.413836 11 0 1 0 0 0 G03 804 4 45.45 0.185482 4 0 0 0 0 0 G04 1035 2 28.06 0.503797 8 0 0 0 0 0 G05 989 3 31.88 0.359658 3 1 1 0 0 0 G06 877 1 43.60 0.979633 2 0 0 0 0 0 G07 911 1 32.71 0.256863 4 0 1 0 0 0 G08 804 3 41.97 0.298607 3 0 0 0 0 0 G09 874 2 40.76 0.259236 3 0 2 0 0 0 G10 928 7 35.91 0.524911 11 0 1 0 0 0 G11 822 4 45.66 0.218826 3 1 0 0 0 0 G12 851 3 43.73 0.221640 2 0 0 0 0 0 G13 853 1 41.88 0.377890 6 0 2 0 0 0 G14 1080 7 25.48 0.413843 10 0 2 0 0 0 G15 758 2 47.08 0.304588 0 0 0 0 0 0 G16 875 5 38.94 1.755178 27 0 5 0 0 0 G17 1095 3 24.40 0.373787 4 0 1 0 0 0 G18 1084 6 24.27 0.334044 11 0 2 0 0 0 G19 763 0 47.12 0.239859 3 1 2 0 0 0 G20 888 3 42.52 0.384096 2 0 0 0 0 0 G21 779 2 39.36 0.795217 6 0 0 0 0 0 G22 978 8 27.90 0.419512 11 1 2 0 0 0 G23 800 2 41.79 0.283317 6 0 0 0 0 0 G25 919 5 31.38 0.549773 8 0 1 0 0 0 G26 1024 7 27.73 0.346725 8 0 3 0 0 0 G27 914 0 42.75 0.563162 4 0 0 0 0 0 G28 1047 17 27.18 0.533866 31 1 7 0 0 0 G29 846 1 42.69 0.296651 4 0 0 0 0 0 G30 882 3 41.85 0.207047 1 0 1 0 0 0 G31 1060 1 27.56 0.360303 7 0 0 0 0 0 G32 847 0 43.85 0.234436 3 1 1 0 0 0 R09* 1151 1151 0.00 0.000000 0 0 0 0 0 0 R07* 1139 3 0.00 0.274111 0 0 0 0 0 0 R10* 1008 15 0.00 0.241354 0 0 0 0 0 0 R08* 1121 13 0.00 0.306414 4 0 0 0 0 0 R18* 949 3 0.00 0.313958 4 0 0 0 0 0 R17* 850 1 0.00 0.237858 3 0 0 0 0 0 R19* 1026 1 0.00 0.305555 3 0 0 0 0 0 R11* 894 21 0.00 0.228263 0 0 0 0 0 0 R20* 1014 3 0.00 0.296184 1 0 1 0 0 0 R21* 1047 5 0.00 0.236183 1 1 0 0 0 0 R02* 924 7 0.00 0.277610 3 1 1 0 0 0 R03* 869 2 0.00 0.234242 2 0 0 0 0 0 R13* 896 36 0.00 0.249628 1 1 0 0 0 0 R14* 906 12 0.00 0.303163 2 0 0 0 0 0 R15* 956 9 0.00 0.256359 0 0 0 0 0 0 * = SV with no NAV info mean MP2 rms : 0.379808 m total mean elevation : 35.88 degrees # MP2 obs > 0 : 40798 # qc MP2 slips < 25 : 230 # Rvr L1 slips < 25 : 9 # Rvr L2 slips < 25 : 37 # qc MP2 slips > 25 : 0 # Rvr L1 slips > 25 : 0 # Rvr L2 slips > 25 : 0 elev (deg) tot slps 5=% 1|m 15=% 2|m 85 - 90 79 0 0.055619 | 80 - 85 597 0 0.062391 | 75 - 80 708 0 0.078746 || 70 - 75 1027 0 0.079838 || 65 - 70 1288 0 0.092875 || 60 - 65 1366 0 0.094868 || 55 - 60 1380 0 0.108591 || 50 - 55 1428 0 0.111825 || 45 - 50 1517 0 0.132591 ||| 40 - 45 1714 0 0.137885 ||| 35 - 40 1602 0 0.175399 |||| 30 - 35 1900 0 0.214453 |||| 25 - 30 1987 0 0.238766 ||||| 20 - 25 2207 0 0.261798 ||||| 15 - 20 2489 1 0.360080 ||||||| 10 - 15 2611 15 0.707173 #||||||||||||| 5 - 10 1997 42 0.759052 ####||||||||||| 0 - 5 1403 148 1.749270 #####################|||||||||||||| < 0 0 0 0.000000 S/N L1 summary (per elevation bin): elev (deg) tot SN1 sig mean 2|0 4|0 6|0 8|0 85 - 90 79 5.776 50.665 ###|||||||||||||||||||||| 80 - 85 597 2.161 50.680 #|||||||||||||||||||||||| 75 - 80 709 1.954 50.877 #|||||||||||||||||||||||| 70 - 75 1028 1.627 50.968 #|||||||||||||||||||||||| 65 - 70 1288 1.458 51.021 #||||||||||||||||||||||||| 60 - 65 1367 1.408 51.038 #||||||||||||||||||||||||| 55 - 60 1380 1.400 50.910 #|||||||||||||||||||||||| 50 - 55 1428 1.378 50.567 #|||||||||||||||||||||||| 45 - 50 1517 1.360 50.092 #|||||||||||||||||||||||| 40 - 45 1714 1.287 49.451 #|||||||||||||||||||||||| 35 - 40 1602 1.358 48.618 #||||||||||||||||||||||| 30 - 35 1902 1.327 47.459 #||||||||||||||||||||||| 25 - 30 1987 1.312 46.335 #|||||||||||||||||||||| 20 - 25 2209 1.333 44.853 #||||||||||||||||||||| 15 - 20 2491 1.472 43.310 #||||||||||||||||||||| 10 - 15 2628 1.778 41.611 #|||||||||||||||||||| 5 - 10 2035 2.111 39.813 #||||||||||||||||||| 0 - 5 1476 2.350 37.519 #|||||||||||||||||| < 0 0 0.000 0.000 S/N L2 summary (per elevation bin): elev (deg) tot SN2 sig mean 2|0 4|0 6|0 8|0 85 - 90 79 5.856 51.373 ###||||||||||||||||||||||| 80 - 85 597 2.280 50.394 #|||||||||||||||||||||||| 75 - 80 709 2.099 49.992 #|||||||||||||||||||||||| 70 - 75 1028 1.766 49.812 #|||||||||||||||||||||||| 65 - 70 1288 1.578 49.277 #|||||||||||||||||||||||| 60 - 65 1367 1.496 48.648 #||||||||||||||||||||||| 55 - 60 1380 1.504 47.796 #||||||||||||||||||||||| 50 - 55 1428 1.503 46.718 #|||||||||||||||||||||| 45 - 50 1517 1.576 45.464 #|||||||||||||||||||||| 40 - 45 1714 1.665 44.082 #||||||||||||||||||||| 35 - 40 1602 1.715 42.585 #|||||||||||||||||||| 30 - 35 1902 1.842 40.857 #||||||||||||||||||| 25 - 30 1987 1.821 39.224 #||||||||||||||||||| 20 - 25 2209 1.848 37.533 #|||||||||||||||||| 15 - 20 2491 2.195 35.856 #||||||||||||||||| 10 - 15 2615 2.682 34.243 #|||||||||||||||| 5 - 10 2010 3.694 32.457 ##|||||||||||||| 0 - 5 1407 4.780 30.037 ##||||||||||||| < 0 0 0.000 0.000