Calculates the dynamic brownian motion variance
brownian.motion.variance.dyn.RdA function to calculate the dynamic brownian motion variance for a movement track. It can be also used by advanced programmers to program against.
Usage
# S4 method for class '.MoveTrackSingle,numeric,numeric,numeric'
brownian.motion.variance.dyn(object, location.error, window.size, margin)Arguments
- object
a
move,moveStackormoveBurstobject can be used for variance calculation. This object must be in a flat coordinate system (projection different to longitude/latitude), usespTransformto transform your coordinates.- location.error
single numeric value or vector of the length of coordinates that describes the error of the location (sender/receiver) system in map units.
- window.size
The size of the moving window along the track for the variance calculation. Larger windows provide more stable/accurate estimates of the brownian motion variance but are less well able to capture more frequent changes in behavior. This number has to be odd.
- margin
The margin size used for variance calculation. This number has to be odd.
Value
'dBMvariance' object, if move object is provided
'dBMvarianceStack' object, if moveStack object is provided
'dBMvarianceBurst' object, if moveBurst object is provided
References
Kranstauber, B., Kays, R., LaPoint, S. D., Wikelski, M. and Safi, K. (2012), A dynamic Brownian bridge movement model to estimate utilization distributions for heterogeneous animal movement. Journal of Animal Ecology. doi: 10.1111/j.1365-2656.2012.01955.x
Examples
data(leroy)
data2 <- spTransform(leroy[1:80,], CRSobj="+proj=aeqd +ellps=WGS84", center=TRUE)
err<-rep(23.5,n.locs(data2))
dBMvar <- brownian.motion.variance.dyn(data2, location.error=err, margin=13, window.siz=31)
dBMvar
#> coordinates timestamp eobs.battery.voltage
#> 45 (-2073.424, 1090.731) 2009-02-11 12:16:45.000 3615
#> 46 (-2067.168, 1089.462) 2009-02-11 12:31:38.000 3623
#> 47 (-2065.016, 1084.285) 2009-02-11 12:45:48.997 3627
#> 48 (-2059.363, 1095.625) 2009-02-11 13:00:16.002 3632
#> 49 (-2066.399, 1089.018) 2009-02-11 13:15:19.000 3642
#> 50 (-2077.535, 1085.322) 2009-02-11 13:30:13.000 3647
#> 51 (-2064.253, 1089.517) 2009-02-11 13:45:37.000 3652
#> 52 (-2064.594, 1072.254) 2009-02-11 14:00:35.000 3647
#> 53 (-2066.818, 1082.508) 2009-02-11 14:15:49.000 3652
#> 54 (-2067.694, 1083.808) 2009-02-11 14:30:49.000 3654
#> 55 (-2062.493, 1089.228) 2009-02-11 14:45:13.997 3653
#> 56 (-2062.828, 1090.483) 2009-02-11 15:00:45.000 3666
#> 57 (-2067.478, 1065.723) 2009-02-11 15:15:10.999 3623
#> 58 (-2065.26, 1091.861) 2009-02-11 15:30:44.999 3652
#> 59 (-2074.312, 1103.728) 2009-02-11 15:45:33.000 3657
#> 60 (-2060.905, 1115.577) 2009-02-11 16:00:31.999 3654
#> 61 (-2067.577, 1091.906) 2009-02-11 16:15:14.999 3654
#> 62 (-2070.509, 1090.119) 2009-02-11 16:30:11.000 3662
#> 63 (-2066.077, 1096.916) 2009-02-11 16:45:52.999 3666
#> 64 (-2069.845, 1092.751) 2009-02-11 17:00:12.000 3653
#> 65 (-2053.83, 1062.02) 2009-02-11 17:15:12.997 3662
#> 66 (-2060.667, 1091.182) 2009-02-11 17:30:19.000 3662
#> 67 (-2059.831, 1091.16) 2009-02-11 17:45:45.000 3663
#> 68 (-2069.157, 1093.051) 2009-02-11 18:00:23.000 3662
#> 69 (-2066.703, 1084.774) 2009-02-11 18:15:19.999 3657
#> 70 (-2071.263, 1085.62) 2009-02-11 18:30:09.999 3662
#> 71 (-2069.618, 1085.953) 2009-02-11 18:45:17.997 3664
#> 72 (-2070.196, 1094.807) 2009-02-11 19:00:12.997 3664
#> 73 (-2070.331, 1082.032) 2009-02-11 19:15:14.997 3664
#> 74 (-2066.732, 1069.811) 2009-02-11 19:30:48.000 3662
#> 75 (-2069.779, 1094.795) 2009-02-11 19:45:23.997 3657
#> 76 (-2056.311, 1090.726) 2009-02-11 20:01:20.997 3658
#> 77 (-2075.635, 1061.349) 2009-02-11 20:15:44.999 3647
#> 78 (-2070.6, 1085.709) 2009-02-11 20:30:22.000 3652
#> 79 (-2070.945, 1083.209) 2009-02-11 20:45:14.000 3657
#> 80 (-2072.785, 1090.986) 2009-02-11 21:00:17.999 3666
#> 81 (-2056.526, 1082.972) 2009-02-11 21:15:18.999 3664
#> 82 (-2059.877, 1076.652) 2009-02-11 21:30:16.999 3652
#> 83 (-2074.422, 1092.175) 2009-02-11 21:45:06.000 3657
#> 84 (-2065.179, 1088.118) 2009-02-11 22:00:23.000 3662
#> 85 (-2067.703, 1082.786) 2009-02-11 22:15:15.000 3657
#> 86 (-2071.958, 1088.931) 2009-02-11 22:30:49.000 3657
#> 87 (-2070.336, 1092.196) 2009-02-11 22:45:23.000 3652
#> 88 (-2079.595, 1071.314) 2009-02-11 23:00:19.999 3657
#> 89 (-2069.619, 1081.587) 2009-02-11 23:15:15.997 3652
#> 90 (-2067.146, 1080.82) 2009-02-11 23:30:26.000 3662
#> 91 (-2067.079, 1088.185) 2009-02-11 23:45:09.000 3653
#> 92 (-2063.41, 1088.695) 2009-02-12 00:00:05.999 3657
#> 93 (-2069.888, 1085.942) 2009-02-12 00:15:38.997 3662
#> 94 (-2061.815, 1084.54) 2009-02-12 00:30:39.000 3652
#> 95 (-2070.337, 1062.247) 2009-02-12 00:45:19.997 3647
#> 96 (-2071.609, 1080.432) 2009-02-12 01:00:11.997 3652
#> 97 (-2065.697, 1080.264) 2009-02-12 01:15:09.997 3653
#> 98 (-2068.775, 1081.753) 2009-02-12 01:30:22.000 3662
#> 99 (-2069.954, 1085.175) 2009-02-12 01:45:12.000 3653
#> 100 (-2084.331, 1085.824) 2009-02-12 02:00:08.997 3652
#> 101 (-1739.362, 1265.913) 2009-02-12 02:15:30.000 3648
#> 102 (-1545.267, 1254.003) 2009-02-12 02:30:13.999 3632
#> 103 (-1355.856, 1236.466) 2009-02-12 02:45:58.999 3637
#> 104 (-671.8046, 1477.927) 2009-02-12 03:01:11.000 3623
#> 128 (-254.3866, 1629.167) 2009-02-12 09:30:55.000 3615
#> 129 (-197.2929, 1763.915) 2009-02-12 09:45:31.000 3623
#> 130 (-255.5174, 1604.061) 2009-02-12 10:00:18.000 3632
#> 131 (-254.6976, 1633.055) 2009-02-12 10:15:55.999 3640
#> 132 (-233.058, 1652.828) 2009-02-12 10:30:55.997 3638
#> 133 (-243.98, 1645.03) 2009-02-12 10:45:52.000 3642
#> 134 (-254.4599, 1638.909) 2009-02-12 11:00:49.000 3642
#> 135 (-131.4191, 1351.877) 2009-02-12 11:15:39.000 3632
#> 136 (-38.79557, 864.8451) 2009-02-12 11:31:08.997 3632
#> 137 (-42.24389, 684.3609) 2009-02-12 11:46:11.000 3625
#> 184 (145.4499, 703.0806) 2009-02-13 00:45:43.000 3637
#> 185 (137.7489, 492.9915) 2009-02-13 01:00:25.000 3632
#> 186 (84.43719, 133.8222) 2009-02-13 01:15:10.000 3632
#> 187 (471.4874, -276.3753) 2009-02-13 01:30:49.999 3635
#> 188 (476.2554, -301.8584) 2009-02-13 01:45:48.000 3632
#> 189 (561.7113, -679.2605) 2009-02-13 02:00:16.000 3632
#> 190 (874.7864, -1034.941) 2009-02-13 02:15:57.000 3632
#> 191 (1163.795, -1677.816) 2009-02-13 02:31:09.000 3632
#> 192 (1688.915, -1673.731) 2009-02-13 02:46:48.997 3625
#> 193 (2085.19, -1763.593) 2009-02-13 03:01:38.997 3620
#> eobs.horizontal.accuracy.estimate eobs.key.bin.checksum
#> 45 14.85 2992317972
#> 46 5.38 1723246055
#> 47 5.38 1910450098
#> 48 6.40 2286746099
#> 49 7.68 3797866101
#> 50 8.70 3956003832
#> 51 8.45 475472569
#> 52 8.70 339941809
#> 53 3.84 926093098
#> 54 4.86 576092324
#> 55 7.17 2943310215
#> 56 6.91 1434607011
#> 57 5.89 2276933997
#> 58 5.12 3646303882
#> 59 12.54 2198896627
#> 60 12.80 3542771960
#> 61 8.19 3741727053
#> 62 5.89 1230317175
#> 63 20.74 3064068964
#> 64 9.47 802579354
#> 65 9.47 296637532
#> 66 6.40 173584112
#> 67 6.40 1925158895
#> 68 7.17 3711075603
#> 69 6.66 4003121393
#> 70 6.14 2283982083
#> 71 5.89 205691675
#> 72 6.66 3250291258
#> 73 9.73 4124366251
#> 74 8.96 464963184
#> 75 13.57 175662127
#> 76 16.90 3403808943
#> 77 32.77 607887809
#> 78 7.94 3800565560
#> 79 5.89 2394932013
#> 80 6.91 2464123497
#> 81 9.47 1277395188
#> 82 8.96 1795565752
#> 83 8.70 4210037370
#> 84 8.19 3523872212
#> 85 9.22 1090427829
#> 86 3.33 2910296570
#> 87 8.96 2894887465
#> 88 8.19 3117921803
#> 89 6.14 559498906
#> 90 8.45 1604532171
#> 91 4.61 774639894
#> 92 7.17 2608911787
#> 93 7.94 7099154
#> 94 13.57 1480763064
#> 95 8.19 1269123265
#> 96 5.63 3371817643
#> 97 5.63 1091410445
#> 98 7.17 1141925541
#> 99 5.89 4128654486
#> 100 8.19 4219653549
#> 101 7.94 2483946764
#> 102 40.70 1878663691
#> 103 10.75 522872407
#> 104 32.77 508610862
#> 128 4.10 2838873577
#> 129 15.36 1965845718
#> 130 16.38 3432840527
#> 131 7.42 1100978343
#> 132 15.87 2616942344
#> 133 7.42 2916882383
#> 134 8.45 759893441
#> 135 13.57 1615864888
#> 136 18.94 1144716190
#> 137 38.91 65824169
#> 184 4.86 133052724
#> 185 5.63 4012206721
#> 186 5.12 2212989207
#> 187 42.24 2578903376
#> 188 13.06 2271819342
#> 189 32.51 1875816583
#> 190 66.56 3068335944
#> 191 15.87 3134303858
#> 192 25.60 687031706
#> 193 20.74 2316511112
#> eobs.speed.accuracy.estimate eobs.start.timestamp eobs.status
#> 45 5.65 2009-02-11 12:14:59.000 A
#> 46 4.69 2009-02-11 12:30:01.000 A
#> 47 4.19 2009-02-11 12:45:01.000 A
#> 48 5.97 2009-02-11 13:00:02.000 A
#> 49 6.34 2009-02-11 13:15:01.000 A
#> 50 6.15 2009-02-11 13:30:01.000 A
#> 51 5.08 2009-02-11 13:45:01.000 A
#> 52 5.13 2009-02-11 14:00:01.000 A
#> 53 2.86 2009-02-11 14:15:01.000 A
#> 54 3.45 2009-02-11 14:30:01.000 A
#> 55 5.30 2009-02-11 14:45:00.000 A
#> 56 3.77 2009-02-11 15:00:02.000 A
#> 57 4.00 2009-02-11 15:14:59.000 A
#> 58 2.98 2009-02-11 15:30:00.000 A
#> 59 2.71 2009-02-11 15:45:01.000 A
#> 60 2.43 2009-02-11 15:59:59.000 A
#> 61 3.27 2009-02-11 16:15:01.000 A
#> 62 4.29 2009-02-11 16:30:02.000 A
#> 63 6.96 2009-02-11 16:45:00.000 A
#> 64 6.33 2009-02-11 17:00:02.000 A
#> 65 5.31 2009-02-11 17:15:00.000 A
#> 66 4.09 2009-02-11 17:30:02.000 A
#> 67 3.91 2009-02-11 17:45:01.000 A
#> 68 5.66 2009-02-11 18:00:01.000 A
#> 69 5.84 2009-02-11 18:15:00.000 A
#> 70 5.67 2009-02-11 18:30:01.000 A
#> 71 2.39 2009-02-11 18:45:01.000 A
#> 72 10.00 2009-02-11 19:00:01.000 A
#> 73 5.53 2009-02-11 19:15:01.000 A
#> 74 7.59 2009-02-11 19:30:02.000 A
#> 75 9.27 2009-02-11 19:45:00.000 A
#> 76 10.48 2009-02-11 20:00:01.000 A
#> 77 10.08 2009-02-11 20:15:02.000 A
#> 78 4.16 2009-02-11 20:30:02.000 A
#> 79 4.26 2009-02-11 20:45:01.000 A
#> 80 4.93 2009-02-11 21:00:00.000 A
#> 81 8.98 2009-02-11 21:15:01.000 A
#> 82 7.42 2009-02-11 21:30:01.000 A
#> 83 5.09 2009-02-11 21:45:02.000 A
#> 84 4.47 2009-02-11 22:00:01.000 A
#> 85 4.08 2009-02-11 22:15:01.000 A
#> 86 2.66 2009-02-11 22:30:01.000 A
#> 87 8.04 2009-02-11 22:45:02.000 A
#> 88 6.82 2009-02-11 23:00:00.000 A
#> 89 5.37 2009-02-11 23:15:01.000 A
#> 90 7.98 2009-02-11 23:30:02.000 A
#> 91 2.96 2009-02-11 23:45:01.000 A
#> 92 5.60 2009-02-12 00:00:00.000 A
#> 93 5.28 2009-02-12 00:15:01.000 A
#> 94 6.38 2009-02-12 00:30:02.000 A
#> 95 4.73 2009-02-12 00:45:00.000 A
#> 96 4.96 2009-02-12 01:00:01.000 A
#> 97 5.17 2009-02-12 01:15:01.000 A
#> 98 6.16 2009-02-12 01:30:02.000 A
#> 99 3.42 2009-02-12 01:45:01.000 A
#> 100 4.51 2009-02-12 02:00:00.000 A
#> 101 6.31 2009-02-12 02:15:02.000 A
#> 102 14.23 2009-02-12 02:30:00.000 A
#> 103 6.45 2009-02-12 02:45:01.000 A
#> 104 6.96 2009-02-12 03:00:02.000 A
#> 128 3.08 2009-02-12 09:30:00.000 A
#> 129 12.68 2009-02-12 09:45:01.000 A
#> 130 9.30 2009-02-12 10:00:01.000 A
#> 131 5.62 2009-02-12 10:15:00.000 A
#> 132 13.17 2009-02-12 10:30:01.000 A
#> 133 7.12 2009-02-12 10:45:02.000 A
#> 134 7.23 2009-02-12 11:00:01.000 A
#> 135 12.31 2009-02-12 11:15:01.000 A
#> 136 11.05 2009-02-12 11:30:00.000 A
#> 137 9.55 2009-02-12 11:45:02.000 A
#> 184 3.53 2009-02-13 00:44:59.000 A
#> 185 6.56 2009-02-13 01:00:01.000 A
#> 186 5.28 2009-02-13 01:15:01.000 A
#> 187 11.94 2009-02-13 01:30:00.000 A
#> 188 8.11 2009-02-13 01:45:02.000 A
#> 189 17.31 2009-02-13 02:00:01.000 A
#> 190 21.32 2009-02-13 02:15:01.000 A
#> 191 11.17 2009-02-13 02:30:01.000 A
#> 192 13.64 2009-02-13 02:45:00.000 A
#> 193 9.21 2009-02-13 03:00:01.000 A
#> eobs.temperature eobs.type.of.fix eobs.used.time.to.get.fix ground.speed
#> 45 20 3 106 2.10
#> 46 26 3 97 0.51
#> 47 24 3 47 0.16
#> 48 24 3 14 0.23
#> 49 25 3 18 0.48
#> 50 23 3 12 0.17
#> 51 24 3 36 0.29
#> 52 27 3 34 0.25
#> 53 29 3 48 0.02
#> 54 29 3 48 0.19
#> 55 34 3 13 0.43
#> 56 35 3 43 0.13
#> 57 30 3 11 0.62
#> 58 35 3 44 0.11
#> 59 32 3 32 0.15
#> 60 28 3 32 0.04
#> 61 26 3 13 0.15
#> 62 25 3 9 0.17
#> 63 26 3 52 1.19
#> 64 22 3 10 0.24
#> 65 23 3 12 0.36
#> 66 23 3 17 0.34
#> 67 24 3 44 0.17
#> 68 27 3 22 0.16
#> 69 19 3 19 0.02
#> 70 25 3 8 0.13
#> 71 21 3 16 0.25
#> 72 22 3 11 0.22
#> 73 20 3 13 0.35
#> 74 22 3 46 0.33
#> 75 26 3 23 0.23
#> 76 24 3 79 0.27
#> 77 24 3 42 0.64
#> 78 26 3 20 0.25
#> 79 26 3 13 0.10
#> 80 26 3 17 0.11
#> 81 29 3 17 0.27
#> 82 25 3 15 0.37
#> 83 24 3 4 0.42
#> 84 18 3 22 0.11
#> 85 21 3 14 0.05
#> 86 23 3 48 0.05
#> 87 19 3 21 0.18
#> 88 23 3 19 0.18
#> 89 25 3 14 0.28
#> 90 27 3 24 0.19
#> 91 23 3 8 0.22
#> 92 23 3 5 0.11
#> 93 22 3 37 0.05
#> 94 22 3 37 0.61
#> 95 23 3 19 0.13
#> 96 23 3 10 0.22
#> 97 24 3 8 0.15
#> 98 24 3 20 0.08
#> 99 24 3 11 0.33
#> 100 23 3 8 0.41
#> 101 15 3 28 2.58
#> 102 17 3 13 1.61
#> 103 17 3 57 2.10
#> 104 16 3 69 3.51
#> 128 21 3 55 0.40
#> 129 19 3 30 2.03
#> 130 23 3 17 0.46
#> 131 24 3 55 0.62
#> 132 24 3 54 0.15
#> 133 24 3 50 0.76
#> 134 24 3 48 0.38
#> 135 22 3 38 0.55
#> 136 22 3 68 0.82
#> 137 21 3 69 0.34
#> 184 21 3 44 0.40
#> 185 20 3 24 2.02
#> 186 21 3 9 0.53
#> 187 20 3 49 0.91
#> 188 21 3 46 0.19
#> 189 21 3 15 1.66
#> 190 20 3 56 7.64
#> 191 21 3 68 0.81
#> 192 22 3 108 5.21
#> 193 22 3 97 0.89
#> heading height.above.ellipsoid utm.easting utm.northing utm.zone
#> 45 125.17 79.3 590130.0 4732942 18N
#> 46 3.28 94.2 590136.3 4732940 18N
#> 47 91.10 82.5 590138.5 4732935 18N
#> 48 335.54 153.7 590144.0 4732947 18N
#> 49 359.79 73.7 590137.0 4732940 18N
#> 50 29.49 71.2 590126.0 4732936 18N
#> 51 7.21 76.9 590139.2 4732941 18N
#> 52 10.49 108.2 590139.1 4732923 18N
#> 53 11.80 90.7 590136.7 4732934 18N
#> 54 13.76 78.3 590135.8 4732935 18N
#> 55 340.79 59.6 590140.9 4732940 18N
#> 56 359.14 99.2 590140.6 4732942 18N
#> 57 7.21 88.2 590136.3 4732917 18N
#> 58 18.35 91.7 590138.1 4732943 18N
#> 59 140.90 110.2 590128.9 4732955 18N
#> 60 92.41 96.7 590142.2 4732967 18N
#> 61 337.51 83.2 590135.8 4732943 18N
#> 62 355.21 96.3 590132.9 4732941 18N
#> 63 350.62 77.3 590137.3 4732948 18N
#> 64 15.73 81.2 590133.5 4732944 18N
#> 65 15.07 76.1 590150.0 4732913 18N
#> 66 1.97 74.7 590142.7 4732942 18N
#> 67 348.65 70.5 590143.6 4732942 18N
#> 68 350.62 72.5 590134.2 4732944 18N
#> 69 2.62 66.9 590136.8 4732936 18N
#> 70 14.42 55.1 590132.2 4732937 18N
#> 71 298.19 90.5 590133.9 4732937 18N
#> 72 350.62 45.8 590133.2 4732946 18N
#> 73 342.75 89.6 590133.2 4732933 18N
#> 74 184.81 44.1 590137.0 4732921 18N
#> 75 353.24 95.4 590133.6 4732946 18N
#> 76 342.10 49.7 590147.1 4732942 18N
#> 77 325.06 148.0 590128.2 4732912 18N
#> 78 345.37 89.8 590132.9 4732937 18N
#> 79 24.25 90.2 590132.6 4732934 18N
#> 80 11.80 72.2 590130.6 4732942 18N
#> 81 352.58 109.4 590147.0 4732934 18N
#> 82 10.49 96.8 590143.7 4732928 18N
#> 83 356.52 76.4 590129.0 4732943 18N
#> 84 345.37 98.1 590138.3 4732939 18N
#> 85 7.86 94.3 590135.8 4732934 18N
#> 86 3.93 87.9 590131.5 4732940 18N
#> 87 337.51 85.7 590133.1 4732943 18N
#> 88 357.83 133.5 590124.1 4732922 18N
#> 89 0.00 100.2 590133.9 4732933 18N
#> 90 11.14 76.8 590136.4 4732932 18N
#> 91 3.28 84.0 590136.4 4732939 18N
#> 92 348.00 75.7 590140.0 4732940 18N
#> 93 338.17 86.5 590133.6 4732937 18N
#> 94 354.55 99.8 590141.7 4732936 18N
#> 95 19.01 124.4 590133.5 4732913 18N
#> 96 358.48 82.9 590131.9 4732931 18N
#> 97 13.76 106.6 590137.9 4732931 18N
#> 98 14.42 97.4 590134.8 4732933 18N
#> 99 11.80 88.4 590133.5 4732936 18N
#> 100 343.41 77.7 590119.2 4732937 18N
#> 101 110.10 66.5 590461.6 4733121 18N
#> 102 20.32 58.4 590655.8 4733112 18N
#> 103 108.13 82.4 590845.3 4733097 18N
#> 104 306.71 108.8 591525.9 4733347 18N
#> 128 340.79 84.8 591941.1 4733504 18N
#> 129 112.07 48.1 591996.4 4733640 18N
#> 130 1.31 91.7 591940.3 4733479 18N
#> 131 341.44 63.3 591940.8 4733508 18N
#> 132 235.27 -5.3 591962.1 4733528 18N
#> 133 321.78 22.5 591951.3 4733520 18N
#> 134 10.49 46.3 591940.9 4733514 18N
#> 135 116.65 93.4 592067.8 4733229 18N
#> 136 180.88 83.9 592166.8 4732743 18N
#> 137 338.82 44.5 592165.8 4732563 18N
#> 184 32.11 61.8 592353.2 4732584 18N
#> 185 348.65 60.0 592348.3 4732374 18N
#> 186 8.52 61.2 592299.8 4732014 18N
#> 187 353.89 79.5 592692.2 4731609 18N
#> 188 1.31 31.4 592697.3 4731584 18N
#> 189 177.60 20.8 592787.7 4731208 18N
#> 190 194.64 43.9 593105.4 4730856 18N
#> 191 5.24 82.8 593402.9 4730217 18N
#> 192 49.15 91.9 593927.8 4730228 18N
#> 193 16.38 116.0 594325.1 4730144 18N
#> study.local.timestamp
#> 45 2009-02-11 06:16:45.000
#> 46 2009-02-11 06:31:38.000
#> 47 2009-02-11 06:45:48.997
#> 48 2009-02-11 07:00:16.002
#> 49 2009-02-11 07:15:19.000
#> 50 2009-02-11 07:30:13.000
#> 51 2009-02-11 07:45:37.000
#> 52 2009-02-11 08:00:35.000
#> 53 2009-02-11 08:15:49.000
#> 54 2009-02-11 08:30:49.000
#> 55 2009-02-11 08:45:13.997
#> 56 2009-02-11 09:00:45.000
#> 57 2009-02-11 09:15:10.999
#> 58 2009-02-11 09:30:44.999
#> 59 2009-02-11 09:45:33.000
#> 60 2009-02-11 10:00:31.999
#> 61 2009-02-11 10:15:14.999
#> 62 2009-02-11 10:30:11.000
#> 63 2009-02-11 10:45:52.999
#> 64 2009-02-11 11:00:12.000
#> 65 2009-02-11 11:15:12.997
#> 66 2009-02-11 11:30:19.000
#> 67 2009-02-11 11:45:45.000
#> 68 2009-02-11 12:00:23.000
#> 69 2009-02-11 12:15:19.999
#> 70 2009-02-11 12:30:09.999
#> 71 2009-02-11 12:45:17.997
#> 72 2009-02-11 13:00:12.997
#> 73 2009-02-11 13:15:14.997
#> 74 2009-02-11 13:30:48.000
#> 75 2009-02-11 13:45:23.997
#> 76 2009-02-11 14:01:20.997
#> 77 2009-02-11 14:15:44.999
#> 78 2009-02-11 14:30:22.000
#> 79 2009-02-11 14:45:14.000
#> 80 2009-02-11 15:00:17.999
#> 81 2009-02-11 15:15:18.999
#> 82 2009-02-11 15:30:16.999
#> 83 2009-02-11 15:45:06.000
#> 84 2009-02-11 16:00:23.000
#> 85 2009-02-11 16:15:15.000
#> 86 2009-02-11 16:30:49.000
#> 87 2009-02-11 16:45:23.000
#> 88 2009-02-11 17:00:19.999
#> 89 2009-02-11 17:15:15.997
#> 90 2009-02-11 17:30:26.000
#> 91 2009-02-11 17:45:09.000
#> 92 2009-02-11 18:00:05.999
#> 93 2009-02-11 18:15:38.997
#> 94 2009-02-11 18:30:39.000
#> 95 2009-02-11 18:45:19.997
#> 96 2009-02-11 19:00:11.997
#> 97 2009-02-11 19:15:09.997
#> 98 2009-02-11 19:30:22.000
#> 99 2009-02-11 19:45:12.000
#> 100 2009-02-11 20:00:08.997
#> 101 2009-02-11 20:15:30.000
#> 102 2009-02-11 20:30:13.999
#> 103 2009-02-11 20:45:58.999
#> 104 2009-02-11 21:01:11.000
#> 128 2009-02-12 03:30:55.000
#> 129 2009-02-12 03:45:31.000
#> 130 2009-02-12 04:00:18.000
#> 131 2009-02-12 04:15:55.999
#> 132 2009-02-12 04:30:55.997
#> 133 2009-02-12 04:45:52.000
#> 134 2009-02-12 05:00:49.000
#> 135 2009-02-12 05:15:39.000
#> 136 2009-02-12 05:31:08.997
#> 137 2009-02-12 05:46:11.000
#> 184 2009-02-12 18:45:43.000
#> 185 2009-02-12 19:00:25.000
#> 186 2009-02-12 19:15:10.000
#> 187 2009-02-12 19:30:49.999
#> 188 2009-02-12 19:45:48.000
#> 189 2009-02-12 20:00:16.000
#> 190 2009-02-12 20:15:57.000
#> 191 2009-02-12 20:31:09.000
#> 192 2009-02-12 20:46:48.997
#> 193 2009-02-12 21:01:38.997