Jim and Steve, sorry about my error to presume (I checked the help and wiki but couldn't confirm from that so I
assu
med

).
Jim, I did look at your October log file around the 14th and 15th of October and notice that the logging time has changed from 10 min to 1 min at 14/10/12 22:51 and there are 2 entries for 14/10/12 22:50 with with mostly the same data except for - Recent (10-min) high gust and Average wind bearing. Also 14/10/12 23:25 has some data much different (possibly wrong?) compared to the data 1 min earlier and 1 min later.
14/10/12,22:30,7.3,66,1.4,2.2,5.4,195,0.00,0.00,29.86,1.70,26.2,32,4.5,7.3,7.3,0.0,0,0.000,0.000,4.8,0,0.0,180
14/10/12,22:40,7.2,67,1.5,2.2,5.4,192,0.00,0.00,29.86,1.70,26.2,32,4.5,7.2,7.2,0.0,0,0.000,0.000,4.7,0,0.0,135
14/10/12,22:50,7.0,67,1.3,1.6,6.0,184,0.00,0.00,29.86,1.70,26.2,32,3.1,7.0,7.0,0.0,0,0.000,0.000,4.7,0,0.0,180
14/10/12,22:50,7.0,67,1.3,1.6,3.1,182,0.00,0.00,29.86,1.70,26.2,32,3.1,7.0,7.0,0.0,0,0.000,0.000,4.7,0,0.0,180
14/10/12,22:51,6.8,67,1.1,2.2,3.8,182,0.00,0.00,29.85,1.70,26.2,32,3.8,6.8,6.8,0.0,0,0.000,0.000,4.3,0,0.0,180
14/10/12,23:10,6.9,68,1.4,3.8,6.9,187,0.00,0.00,29.85,1.70,26.1,31,4.5,5.9,6.9,0.0,0,0.000,0.000,3.9,0,0.0,180
14/10/12,23:20,6.6,68,1.1,1.6,5.4,190,0.00,0.00,29.85,1.70,26.1,31,3.1,6.6,6.6,0.0,0,0.000,0.000,4.3,0,0.0,225
14/10/12,23:25,15.2,90,13.6,6.0,12.1,257,0.00,0.00,29.84,1.67,19.7,62,12.1,14.9,15.2,0.0,0,0.000,0.000,14.4,0,0.0,270
14/10/12,23:26,6.4,69,1.1,3.1,12.1,240,2.13,0.00,29.85,1.70,26.0,31,4.5,5.7,6.4,0.0,0,0.000,0.000,3.6,0,0.0,180
14/10/12,23:27,6.3,69,1.0,3.1,12.1,225,0.00,0.00,29.85,1.70,26.0,31,5.4,5.5,6.3,0.0,0,0.000,0.000,3.5,0,0.0,180
Not sure if this may be the cause or if this may have corrupted the dayfile.txt file
Paul