Here is the VDR recording from the moment that I turned on my

chartplotter and

AIS. You will see that in lines 112, 115, 117, 135, 141 and 146 there is, indeed, an output with a lat long of zero for $GPGGA, $GPGLL and $GPRMC. However, in between there are also some outputs that look normal.

On watching the

screen, the

boat position momentarily moved from here to the equator and then back again a few times, but on this occasion it did not actually

record a track.

I then turned off the

chartplotter and

AIS, leaving

OpenCPN on. After a moment, suddenly there is a track from here to the equator and back again!

I tried to reproduce all this but did not succeed. I have it set to automatic daily tracks but did not get a repeat of the track showing up. I replayed the output and that didn't create a track either.

I also tried the chartplotter without AIS but got no 0,0 output. Then I tried with the AIS on again, but no 0,0 plot that time. Then the next time I did get a few 0,0. It does seem to be an initial powering up, finding satelites thing.

I am trying to figure out if the 0,0 plot is coming from the AIS or the chartplotter (they have separate GPS antennae, multiplexed together through shipmodul, with one having priority over the other (can't remember which way around I set it). But so far haven't been able to figure that out, either.

I still think a filter to remove a 0,0 plot would make sense, as a real-life 0.000, 0.000 plot (to 3 decimals) is both extremely unlikely and, in any case, would last for only one second until one had moved a few meters.

So, you are correct that the GPS is providing a 0,0

NMEA sentence, but I don't know why or from where! Nor do I understand why sometimes these result in a track being recorded while at other times, thought the

boat position goes back and forth to the equator a few times, no track is recorded. Or why, that one time, the track was recorded AFTER I turned off the MMEA stream.

One other thought. I notice that each time I turn on the AIS I get a few $AIALR outputs, and then they settled down. This seems to just be a powering-up thing. But if it were not, ie if the

alarm states continued, I would still not know about them. I wonder if we can have something in CPN that tells you if there is an

alarm message being sent so that one can then go and investigate? I don't know what range of alarm sentences exist, but just a thought.

Any more thoughts about all this?

$WIMWV,326.0,R,0.0,N,A*24

$HCHDG,105.5,,,0,E*36

$SDDBT,11.2,f,3.4,M,1.8,F*3A

$VWVHW,,,105.5,M,0.00,N,0.00,K*2F

$WIMTW,17.2,C*09

!AIVDO,1,1,,,B4eH7:03wk?8mP=18D3Q3wv5kP06,0*3E

$HCHDG,105.5,,,0,E*36

$WIMWV,327.0,R,0.0,N,A*25

$HCHDG,105.5,,,0,E*36

$SDDBT,11.2,f,3.4,M,1.8,F*3A

$VWVHW,,,105.5,M,0.00,N,0.00,K*2F

$WIMTW,17.2,C*09

!AIVDO,1,1,,,B4eH7:03wk?8mP=18D3Q3wv5kP06,0*3E

$HCHDG,105.0,,,0,E*33

$WIMWV,308.5,R,0.0,N,A*2D

$HCHDG,105.0,,,0,E*33

$SDDBT,11.0,f,3.3,M,1.8,F*3F

$VWVHW,,,105.0,M,0.00,N,0.00,K*2A

$WIMTW,17.2,C*09

!AIVDO,1,1,,,B4eH7:03wk?8mP=18D3Q3wv5kP06,0*3E

$HCHDG,104.5,,,0,E*37

$WIMWV,322.5,R,0.0,N,A*25

$HCHDG,105.0,,,0,E*33

$SDDBT,11.0,f,3.3,M,1.8,F*3F

$VWVHW,,,105.0,M,0.00,N,0.00,K*2A

$WIMTW,17.2,C*09

!AIVDO,1,1,,,B4eH7:03wk?8mP=18D3Q3wv5kP06,0*3E

$HCHDG,104.5,,,0,E*37

$WIMWV,313.5,R,0.0,N,A*27

$HCHDG,104.5,,,0,E*37

$SDDBT,11.0,f,3.3,M,1.8,F*3F

$VWVHW,,,104.5,M,0.00,N,0.00,K*2E

$WIMTW,17.2,C*09

!AIVDO,1,1,,,B4eH7:03wk?8mP=18D3Q3wv5kP06,0*3E

$HCHDG,104.5,,,0,E*37

$WIMWV,316.0,R,0.0,N,A*27

$HCHDG,104.5,,,0,E*37

$SDDBT,11.3,f,3.4,M,1.8,F*3B

$VWVHW,,,104.5,M,0.00,N,0.00,K*2E

$WIMTW,17.2,C*09

!AIVDO,1,1,,,B4eH7:03wk?8mP=18D3Q3wv5kP06,0*3E

$HCHDG,103.5,,,0,E*30

$WIMWV,333.0,R,0.0,N,A*20

$HCHDG,103.5,,,0,E*30

$SDDBT,10.8,f,3.2,M,1.8,F*37

$VWVHW,,,103.5,M,0.00,N,0.00,K*29

$WIMTW,17.2,C*09

$HCHDG,103.5,,,0,E*30

$WIMWV,309.0,R,0.0,N,A*29

!AIVDO,1,1,,,B4eH7:03wk?8mP=18D3Q3wv5kP06,0*3E

$HCHDG,104.0,,,0,E*32

$SDDBT,11.0,f,3.3,M,1.8,F*3F

$VWVHW,,,104.0,M,0.00,N,0.00,K*2B

$WIMTW,17.2,C*09

$WIMWV,324.0,R,0.0,N,A*26

!AIVDO,1,1,,,B4eH7:03wk?8mP=18D3Q3wv5kP06,0*3E

$HCHDG,103.5,,,0,E*30

$HCHDG,103.5,,,0,E*30

$SDDBT,11.5,f,3.5,M,1.9,F*3D

$VWVHW,,,103.5,M,0.00,N,0.00,K*29

$WIMTW,17.2,C*09

$WIMWV,330.0,R,0.0,N,A*23

$HCHDG,103.0,,,0,E*35

!AIVDO,1,1,,,B4eH7:03wk?8mP=18D3Q3wv5kP06,0*3E

$HCHDG,103.0,,,0,E*35

$SDDBT,11.0,f,3.3,M,1.8,F*3F

$VWVHW,,,103.0,M,0.00,N,0.00,K*2C

$WIMTW,17.2,C*09

$WIMWV,319.0,R,0.0,N,A*28

$HCHDG,103.0,,,0,E*35

!AIVDO,1,1,,,B4eH7:03wk?8mP=18D3Q3wv5kP06,0*3E

$HCHDG,102.5,,,0,E*31

$SDDBT,11.2,f,3.4,M,1.8,F*3A

$VWVHW,,,102.5,M,0.00,N,0.00,K*28

$WIMTW,17.2,C*09

$WIMWV,322.5,R,0.0,N,A*25

$HCHDG,103.0,,,0,E*35

!AIVDO,1,1,,,B4eH7:03wk?8mP=18D3Q3wv5kP06,0*3E

$HCHDG,103.0,,,0,E*35

$SDDBT,11.2,f,3.4,M,1.8,F*3A

$VWVHW,,,103.0,M,0.00,N,0.00,K*2C

$WIMWV,317.5,R,0.0,N,A*23

$WIMTW,17.2,C*09

$HCHDG,102.5,,,0,E*31

!AIVDO,1,1,,,B4eH7:03wk?8mP=18D3Q3wv5kP06,0*3E

$HCHDG,102.0,,,0,E*34

$SDDBT,11.0,f,3.3,M,1.8,F*3F

$VWVHW,,,102.0,M,0.00,N,0.00,K*2D

$WIMWV,318.0,R,0.0,N,A*29

$WIMTW,17.2,C*09

$HCHDG,102.0,,,0,E*34

!AIVDO,1,1,,,B4eH7:03wk?8mP=18D3Q3wv5kP06,0*3E

$HCHDG,102.0,,,0,E*34

$SDDBT,11.6,f,3.5,M,1.9,F*3E

$WIMWV,307.0,R,0.0,N,A*27

$VWVHW,,,102.0,M,0.00,N,0.00,K*2D

$WIMTW,17.2,C*09

$HCHDG,102.0,,,0,E*34

!AIVDO,1,1,,,B4eH7:03wk?8mP=18D3Q3wv5kP06,0*3E

$HCHDG,102.0,,,0,E*34

$WIMWV,319.0,R,0.0,N,A*28

$SDDBT,11.5,f,3.5,M,1.9,F*3D

$VWVHW,,,102.0,M,0.00,N,0.00,K*2D

$WIMTW,17.2,C*09

$HCHDG,101.0,,,0,E*37

!AIVDO,1,1,,,B4eH7:03wk?8mP=18D3Q3wv5kP06,0*3E

$HCHDG,102.0,,,0,E*34

$WIMWV,309.5,R,0.0,N,A*2C

$SDDBT,10.9,f,3.3,M,1.8,F*37

$GPGGA,043352.00,0000.000,N,00000.000,E,1,04,02.7, 047.0,M,,M,0.0,0000*6D

$VWVHW,,,102.0,M,0.00,N,0.00,K*2D

$WIMTW,17.2,C*09

$GPGLL,0000.000,N,00000.000,E,043352.00,A*07

$GPXTE,A,A,,,*72

$GPRMC,043352.00,A,0000.000,N,00000.000,E,000.0,00 0.0,,0.0,E*5B

$HCHDG,101.0,,,0,E*37

!AIVDO,1,1,,,B4eH7:03wk?8mP=18D3Q3wv5kP06,0*3E

$HCHDG,101.0,,,0,E*37

$WIMWV,323.5,R,0.0,N,A*24

$SDDBT,10.9,f,3.3,M,1.8,F*37

$VWVHW,,,101.0,M,0.00,N,0.00,K*2E

$WIMTW,17.2,C*09

$HCHDG,101.0,,,0,E*37

!AIVDO,1,1,,,B4eH7:03wk?8mP=18D3Q3wv5kP06,0*3E

$HCHDG,101.0,,,0,E*37

$GPGGA,043352.00,3739.052,N,02119.365,E,1,04,02.7, 047.0,M,,M,0.0,0000*6F

$WIMWV,296.0,R,0.0,N,A*2E

$GPGLL,3739.052,N,02119.365,E,043352.00,A*05

$GPXTE,A,A,,,*72

$SDDBT,10.8,f,3.2,M,1.8,F*37

$VWVHW,,,101.0,M,0.00,N,0.00,K*2E

$WIMTW,17.2,C*09

$GPRMC,043352.00,A,3739.052,N,02119.365,E,000.3,00 0.0,010514,0.0,E*5B

$HCHDG,100.5,,,0,E*33

!AIVDO,1,1,,,B4eH7:03wk?8mP=18D3Q3wv5kP06,0*3E

$HCHDG,101.0,,,0,E*37

$GPGGA,043352.00,0000.000,N,00000.000,E,1,03,03.5, 016.1,M,,M,0.0,0000*6C

$WIMWV,317.5,R,0.0,N,A*23

$GPGLL,0000.000,N,00000.000,E,043352.00,A*07

$GPXTE,A,A,,,*72

$SDDBT,11.3,f,3.4,M,1.8,F*3B

$VWVHW,,,101.0,M,0.00,N,0.00,K*2E

$WIMTW,17.2,C*09

$GPRMC,043352.00,A,0000.000,N,00000.000,E,000.3,00 0.0,010514,0.0,E*59

$HCHDG,100.0,,,0,E*36

!AIVDO,1,1,,,B4eH7:03wk?8mP=18D3Q3wv5kP06,0*3E

$WIMWV,301.5,R,0.0,N,A*24

$HCHDG,100.0,,,0,E*36

$SDDBT,11.2,f,3.4,M,1.8,F*3A

$VWVHW,,,100.0,M,0.00,N,0.00,K*2F

$WIMTW,17.2,C*09

$HCHDG,100.0,,,0,E*36

!AIVDO,1,1,,,B4eH7:03wk?8mP=18D3Q3wv5kP06,0*3E

$WIMWV,300.0,R,0.0,N,A*20

$HCHDG,100.0,,,0,E*36

$SDDBT,11.1,f,3.3,M,1.8,F*3E

$VWVHW,,,100.0,M,0.00,N,0.00,K*2F

$WIMTW,17.2,C*09

$HCHDG,100.0,,,0,E*36

$GPGGA,043355.00,3739.055,N,02119.372,E,1,03,03.5, 016.1,M,,M,0.0,0000*68

$GPGLL,3739.055,N,02119.372,E,043355.00,A*03

$GPXTE,A,A,,,*72

!AIVDO,1,1,,,B4eH7:03wk?8mP=18D3Q3wv5kP06,0*3E

$GPRMC,043355.00,A,3739.055,N,02119.372,E,000.0,00 0.0,010514,0.0,E*5E

$WIMWV,311.5,R,0.0,N,A*25

$HCHDG,100.0,,,0,E*36

$SDDBT,11.1,f,3.3,M,1.8,F*3E

$VWVHW,,,100.0,M,0.00,N,0.00,K*2F

$WIMTW,17.2,C*09

$HCHDG,99.0,,,0,E*07

$GPGGA,043358.00,3739.055,N,02119.372,E,1,03,03.5, 016.1,M,,M,0.0,0000*65

$GPGLL,3739.055,N,02119.372,E,043358.00,A*0E

$GPXTE,A,A,,,*72

$WIMWV,310.0,R,0.0,N,A*21

!AIVDO,1,1,,,B4eH7:03wk?8mP=18D3Q3wv5kP06,0*3E

$GPRMC,043358.00,A,3739.055,N,02119.372,E,000.0,00 0.0,010514,0.0,E*53

$HCHDG,99.0,,,0,E*07

$SDDBT,10.9,f,3.3,M,1.8,F*37

$VWVHW,,,99.0,M,0.00,N,0.00,K*1E

$WIMTW,17.2,C*09

$HCHDG,99.0,,,0,E*07

$GPGGA,043358.00,3739.055,N,02119.372,E,1,03,03.5,-06.0,M,,M,0.0,0000*78

$GPGLL,3739.055,N,02119.372,E,043358.00,A*0E

$GPXTE,A,A,,,*72

$WIMWV,312.5,R,0.0,N,A*26

!AIVDO,1,1,,,B4eH7:03wk?8mP=18D3Q3wv5kP06,0*3E

$GPRMC,043358.00,A,3739.055,N,02119.372,E,000.0,00 0.0,010514,0.0,E*53

$HCHDG,98.5,,,0,E*03

$SDDBT,10.9,f,3.3,M,1.8,F*37

$VWVHW,,,98.5,M,0.00,N,0.00,K*1A

$WIMTW,17.2,C*09

$HCHDG,98.5,,,0,E*03

$WIMWV,314.0,R,0.0,N,A*25

$GPGGA,043358.00,3739.055,N,02119.372,E,1,04,04.1,-13.0,M,,M,0.0,0000*78

$GPGLL,3739.055,N,02119.372,E,043358.00,A*0E

!AIVDO,1,1,,,B4eH7:03wk?8mP=18D3Q3wv5kP06,0*3E

$GPXTE,A,A,,,*72

$HCHDG,98.0,,,0,E*06

$GPRMC,043358.00,A,3739.055,N,02119.372,E,000.0,00 0.0,010514,0.0,E*53

$SDDBT,11.0,f,3.3,M,1.8,F*3F

$VWVHW,,,98.0,M,0.00,N,0.00,K*1F

$WIMTW,17.5,C*0E

$HCHDG,98.5,,,0,E*03

$WIMWV,312.5,R,0.0,N,A*26

$GPGGA,043358.00,3739.055,N,02119.372,E,1,05,02.6,-12.0,M,,M,0.0,0000*79

!AIVDO,1,1,,,B4eH7:03wk?8mP=18D3Q3wv5kP06,0*3E

$GPGLL,3739.055,N,02119.372,E,043358.00,A*0E

$HCHDG,98.5,,,0,E*03

$GPXTE,A,A,,,*72

$SDDBT,11.0,f,3.3,M,1.8,F*3F

$GPRMC,043358.00,A,3739.055,N,02119.372,E,000.0,00 0.0,010514,0.0,E*53

$VWVHW,,,98.5,M,0.00,N,0.00,K*1A

$WIMTW,17.5,C*0E

$HCHDG,98.0,,,0,E*06

$WIMWV,326.0,R,0.0,N,A*24

!AIVDO,1,1,,,B4eH7:03wk?8mP=18D3Q3wv5kP06,0*3E

$GPGGA,043358.00,3739.055,N,02119.372,E,1,04,04.1,-16.0,M,,M,0.0,0000*7D

$HCHDG,98.0,,,0,E*06

$GPGLL,3739.055,N,02119.372,E,043358.00,A*0E

$GPXTE,A,A,,,*72

$SDDBT,10.8,f,3.2,M,1.8,F*37

$VWVHW,,,98.0,M,0.00,N,0.00,K*1F

$GPRMC,043358.00,A,3739.055,N,02119.372,E,000.0,00 0.0,010514,0.0,E*53

$WIMTW,17.5,C*0E

$HCHDG,98.0,,,0,E*06

$WIMWV,314.5,R,0.0,N,A*20

$HCHDG,97.5,,,0,E*0C

!AIVDO,1,1,,,B4eH7:03wk?8mP=18D3Q3wv5kP06,0*3E

$GPGGA,043358.00,3739.055,N,02119.372,E,1,06,01.3,-13.0,M,,M,0.0,0000*7D

$SDDBT,11.0,f,3.3,M,1.8,F*3F

$GPGLL,3739.055,N,02119.372,E,043358.00,A*0E

$VWVHW,,,97.5,M,0.00,N,0.00,K*15

$GPXTE,A,A,,,*72

$WIMTW,17.5,C*0E

$GPRMC,043358.00,A,3739.055,N,02119.372,E,000.0,00 0.0,010514,0.0,E*53

$HCHDG,97.5,,,0,E*0C

$WIMWV,308.0,R,0.0,N,A*28

$AIALR,043406,001,V,A,AIS: Tx malfunction*77

$AIALR,043406,002,V,A,AIS:

Antenna VSWR fault*2F

$AIALR,043406,003,V,A,AIS: Rx channel 1 malfunction*21

$AIALR,043406,004,V,A,AIS: Rx channel 2 malfunction*25

$HCHDG,97.5,,,0,E*0C

$AIALR,043406,067,V,A,AIS:

Noise threshold exceeded Chan A*4E

$SDDBT,11.0,f,3.3,M,1.8,F*3F

$GPGGA,043358.00,3739.055,N,02119.372,E,1,06,01.3,-13.0,M,,M,0.0,0000*7D

$AIALR,043406,068,V,A,AIS:

Noise threshold exceeded Chan B*42

$VWVHW,,,97.5,M,0.00,N,0.00,K*15

$GPGLL,3739.055,N,02119.372,E,043358.00,A*0E

$AIALR,043406,057,V,A,AIS: 12v alarm*3C

$WIMTW,17.5,C*0E

$GPXTE,A,A,,,*72

$AIALR,043406,058,V,A,AIS: 6v alarm*06

$HCHDG,97.5,,,0,E*0C

$GPRMC,043358.00,A,3739.055,N,02119.372,E,000.0,00 0.0,010514,0.0,E*53

$AIALR,043406,076,V,A,AIS: 3V3 alarm*1C

$WIMWV,330.5,R,0.0,N,A*26

$GPGGA,043406.00,3739.055,N,02119.372,E,1,06,01.3,-13.0,M,,M,0.0,0000*71

$AIALR,043406,069,V,A,AIS: Transmitter PA fault*25

$HCHDG,97.0,,,0,E*09

$GPGLL,3739.055,N,02119.372,E,043406.00,A*02

!AIVDO,1,1,,,B4eH7:03wk?8mP=18D3Q3wv5sP06,0*26

$SDDBT,11.2,f,3.4,M,1.8,F*3A

$GPXTE,A,A,,,*72

!AIVDO,1,1,,,B4eH7:03wk?8mP=18D3Q3wv5sP06,0*26

$VWVHW,,,97.0,M,0.00,N,0.00,K*10

$GPRMC,043406.00,A,3739.055,N,02119.372,E,000.0,00 0.0,010514,0.0,E*5F

!AIVDO,1,1,,,B4eH7:03wk?8mP=18D3Q3wv5sP06,0*26

$WIMTW,17.5,C*0E

$GPGGA,043407.00,3739.055,N,02119.372,E,1,06,01.3,-13.0,M,,M,0.0,0000*70

$WIMWV,312.0,R,0.0,N,A*23

$GPGLL,3739.055,N,02119.372,E,043407.00,A*03

$HCHDG,97.0,,,0,E*09

$GPXTE,A,A,,,*72

!AIVDO,1,1,,,B4eH7:03wk?8mP=18D3Q3wv5sP06,0*26

$HCHDG,97.0,,,0,E*09

$GPRMC,043407.00,A,3739.055,N,02119.372,E,000.0,00 0.0,010514,0.0,E*5E

$SDDBT,11.2,f,3.4,M,1.8,F*3A

$GPGGA,043408.00,3739.055,N,02119.372,E,1,06,01.3,-14.0,M,,M,0.0,0000*78

$VWVHW,,,97.0,M,0.00,N,0.00,K*10

$GPGLL,3739.055,N,02119.372,E,043408.00,A*0C

$WIMTW,17.5,C*0E

$GPXTE,A,A,,,*72

$HCHDG,96.0,,,0,E*08

$GPRMC,043408.00,A,3739.055,N,02119.372,E,000.0,00 0.0,010514,0.0,E*51

!AIVDO,1,1,,,B4eH7:03wk?8mP=18D3Q3wv5sP06,0*26

$WIMWV,304.0,R,0.0,N,A*24

$HCHDG,96.5,,,0,E*0D

$SDDBT,11.2,f,3.4,M,1.8,F*3A

$VWVHW,,,96.5,M,0.00,N,0.00,K*14

$WIMTW,17.5,C*0E

$WIMWV,278.5,R,0.0,N,A*2B

$GPGGA,043408.00,3739.055,N,02119.372,E,1,06,01.3,-14.0,M,,M,0.0,0000*78

$HCHDG,96.0,,,0,E*08

$GPGLL,3739.055,N,02119.372,E,043408.00,A*0C

$HCHDG,96.0,,,0,E*08

$GPXTE,A,A,,,*72

$SDDBT,11.0,f,3.3,M,1.8,F*3F

$GPRMC,043408.00,A,3739.055,N,02119.372,E,000.0,00 0.0,010514,0.0,E*51

!AIVDO,1,1,,,B4eH7:03wk?8mP=18D3Q3wv5sP06,0*26

$VWVHW,,,96.0,M,0.00,N,0.00,K*11

$WIMTW,17.5,C*0E

$WIMWV,300.5,R,0.0,N,A*25

$HCHDG,96.0,,,0,E*08

$HCHDG,95.5,,,0,E*0E

$SDDBT,11.0,f,3.3,M,1.8,F*3F

$GPGGA,043408.00,3739.055,N,02119.372,E,1,06,01.3,-13.0,M,,M,0.0,0000*7F

$VWVHW,,,95.5,M,0.00,N,0.00,K*17

$GPGLL,3739.055,N,02119.372,E,043408.00,A*0C

$WIMTW,17.5,C*0E

$GPXTE,A,A,,,*72

$WIMWV,273.5,R,0.0,N,A*20

$GPRMC,043408.00,A,3739.055,N,02119.372,E,000.0,00 0.0,010514,0.0,E*51

!AIVDO,1,1,,,B4eH7:03wk?8mP=18D3Q3wv5sP06,0*26

$HCHDG,96.0,,,0,E*08

$HCHDG,96.0,,,0,E*08

$SDDBT,11.1,f,3.3,M,1.8,F*3E

$VWVHW,,,96.0,M,0.00,N,0.00,K*11

$WIMTW,17.5,C*0E

$GPGGA,043408.00,3739.055,N,02119.372,E,1,06,01.3,-13.0,M,,M,0.0,0000*7F

$WIMWV,291.0,R,0.0,N,A*29

$GPGLL,3739.055,N,02119.372,E,043408.00,A*0C

$HCHDG,96.0,,,0,E*08

$GPXTE,A,A,,,*72

!AIVDO,1,1,,,B4eH7:03wk?8mP=18D3Q3wv5sP06,0*26

$HCHDG,95.5,,,0,E*0E

$GPRMC,043408.00,A,3739.055,N,02119.372,E,000.0,00 0.0,010514,0.0,E*51

$SDDBT,11.2,f,3.4,M,1.8,F*3A

$VWVHW,,,95.5,M,0.00,N,0.00,K*17

$WIMTW,17.5,C*0E

$WIMWV,293.0,R,0.0,N,A*2B

$HCHDG,95.5,,,0,E*0E

$GPGGA,043408.00,3739.055,N,02119.372,E,1,06,01.3,-12.0,M,,M,0.0,0000*7E

$GPGLL,3739.055,N,02119.372,E,043408.00,A*0C

$HCHDG,94.0,,,0,E*0A

$GPXTE,A,A,,,*72