Timeline


and

Oct 4, 2018:

8:22 AM Ticket #578 (10 04 08:02 End Experiment) created by pcondor
End.
8:22 AM Ticket #577 (10 04 08:01 Operation Resume) created by pcondor
Person in Charge: P. Condor. Experiment: EW_Drift-Faraday-Imaging-HF 1) …
8:17 AM Ticket #576 (10 04 07:50 Plots) created by pcondor
Plots of rtis, spectras and parameters.
7:41 AM Ticket #575 (10 04 07:10 Transmitter measurements) created by ctipacti
20:00 TX Power sample (-70 dB coupling) Tx1 5.72 Vpp Tx3 5.88 Vpp Tx4 5.56 …
7:09 AM Ticket #574 (10 04 07:00 Spark gaps adjustment) created by pcondor
03-10-2018 22:05 Spark gaps adjustment 04-10-2018 01:08 Spark gaps …
7:07 AM Ticket #573 (10 04 06:06 Noise levels) created by pcondor
03-10-2018 20:50 EW DRIFTS A:26.60 B:26.09 C:24.91 D:25.75 FARADAY …
6:56 AM Ticket #572 (10 03 20:28 Spark in antenna) created by pcondor
Spark in antenna. Transmitter is of to remove mesh.
6:52 AM Ticket #571 (10 04 06:04 Imaging Off) created by pcondor
Imaging off.
6:10 AM Ticket #570 (10 04 00:00 Plots) created by pcondor
Plots of rtis, spectras and parameters.

Oct 3, 2018:

8:11 PM Ticket #569 (10 03 19:55 Operation Resume) created by avaldez
Person in Charge: A. VALDEZ. Experiment: EW_Drift-Faraday-Imaging-HF 1) …
7:47 PM Ticket #568 (10 03 19:15 Spark Gaps Adjustments) created by avaldez
10:13 Spark gaps adjustment 13:22 Spark gaps adjustment 16:17 Spark gaps …
7:33 PM Ticket #567 (10 03 19:00 Transmitter Power Measurements) created by vquesada
08:00 TX Power sample (-70 dB coupling) Tx1 5.60 Vpp Tx3 5.96 Vpp Tx4 5.44 …
8:13 AM Ticket #566 (10 03 08:00 Operation resume) created by jrojas
Person in Charge: J. Rojas. Experiment: EW_Drift-Faraday-Imaging-HF 1) …
8:01 AM Ticket #565 (10 03 07:30 Transmitter measurements) created by rtadeo
20:00 TX Power sample (-70 dB coupling) Tx1 5.7 Vpp Tx3 5.9 Vpp Tx4 5.5 …
8:01 AM Ticket #564 (10 03 07:30 Plots) created by jrojas
8:01 AM Ticket #563 (10 03 07:30 Noise levels) created by jrojas
10 02 22:31 EW DRIFTS A:26.29 B:25.54 C:24.77 D:25.58 FARADAY A:31.55 …
7:37 AM Ticket #562 (10 03 07:30 Spark gaps adjustment) created by jrojas
10 02 21:48 Spark gaps adjustment 10 03 01:02 Spark gaps …
7:09 AM Ticket #561 (10 03 06:33 Imaging off) created by jrojas
12:54 AM Ticket #560 (10 02 23:59 Plots) created by jrojas

Oct 2, 2018:

8:23 PM Ticket #559 (10 02 19:50 Operation resume) created by imanay
Person in Charge: I. Manay. Experiment: ISR_Imaging + HF 1) 08:00 - 20:00 …
7:48 PM Ticket #558 (10 02 19:30 Transmitter measurements) created by ryaya
09:00 TX Power sample (-70 dB coupling) Tx1 5.7 Vpp Tx3 5.9 Vpp Tx4 5.6 …
7:40 PM Ticket #557 (10 02 18:54 Spark-gaps adjustments) created by imanay
02 Oct, 09:58 Spark gaps adjustment 02 Oct, 13:07 Spark gaps adjustment 02 …
7:40 PM Ticket #556 (10 02 10:00 Reception issue at EW_Drifts experiment) created by imanay
Signal at C channel reduces its intensity. This happened after spark-gaps …
8:21 AM Ticket #555 (10 02 08:00 Operation resume) created by abelleza
Person in Charge: A. Belleza. Experiment: EW_Drift-Faraday-Imaging-HF 1) …
8:15 AM Ticket #554 (10 02 07:45 Plots) created by abelleza
10 02 07:45 Plots
7:59 AM Ticket #553 (10 02 07:11 Noise levels) created by abelleza
10 01 20:35 EW DRIFTS A:27.04 B:26.18 C:26.33 D:26.19 FARADAY A:32.04 …
7:53 AM Ticket #552 (10 02 06:38 Spark gaps adjustment) created by abelleza
10 01 21:38 Spark gaps adjustment 10 02 00:36 Spark gaps adjustment …
7:52 AM Ticket #551 (10 02 07:20 Transmitter Power Measurements) created by rtadeo
20:00 TX Power sample (-70 dB coupling) Tx1 5.60 Vpp Tx3 5.80 Vpp Tx4 5.60 …
7:44 AM Ticket #550 (10 01 23:59 Plots) created by abelleza
10 01 23:59 Plots

Oct 1, 2018:

8:17 PM Ticket #549 (10 01 20:00 Operation resume) created by pcondor
Person in Charge: P. Condor. Experiment: EW_Drift-Faraday-Imaging-HF 1) …
8:14 PM Ticket #548 (10 01 19:50 Plots) created by pcondor
Plots of rtis, spectras and parameters.
7:29 PM Ticket #547 (10 01 19:00 Transmitter Power Measurements) created by vquesada
07:50 LV ON 09:35 HV ON 09:50 TX Power sample (-70 dB coupling) Tx1 5.60 …
6:48 PM Ticket #546 (10 01 14:05 Desynchronization) created by pcondor
Desynchronization of EW Drifts.
6:31 PM Ticket #545 (10 01 18:00 Spark gaps adjustment) created by pcondor
12:30 Spark gaps adjustment 15:31 Spark gaps adjustment
6:27 PM Ticket #544 (10 01 19:08 Noise levels) created by pcondor
01-10-2018 10:10 EW DRIFTS A:25.05 B:24.05 C:24.51 D:24.19 FARADAY …
6:17 PM Ticket #543 (10 01 17:32 Imaging On) created by pcondor
Imaging on.
6:15 PM Ticket #542 (10 01 09:51 Clocks is synchronized) created by pcondor
Clocks is synchronized
6:14 PM Ticket #541 (10 01 09:30 Start experiment) created by pcondor
Start experiment

Sep 26, 2018:

8:23 AM Ticket #540 (09 26 07:57 Plots) created by abelleza
09 26 07:57 Plots
7:42 AM Ticket #539 (09 26 07:07 Noise Levels) created by abelleza
09 25 21:30 EW Drift Faraday A 28.86 B 25.99 A 27.99 …
7:40 AM Ticket #538 (09 26 07:20 Transmitter power measurements) created by ryaya
00:00 TX Power sample (-70 dB coupling) Tx1 5.6 Vpp Tx3 5.6 Vpp Tx4 5.5 …
7:34 AM Ticket #537 (09 25 23:00 Transmitter power measurements) created by ryaya
21:00 TX Power sample (-70 dB coupling) Tx1 5.6 Vpp Tx3 5.6 Vpp Tx4 5.5 …
7:33 AM Ticket #536 (09 26 05:32 Spark Gaps Adjustment) created by abelleza
09 25 20:45 Spark Gaps Adjustment 23:40 Spark Gaps Adjustment 09 26 02:45 …
6:35 AM Ticket #535 (09 25 23:59 Plots) created by abelleza
09 25 23:59 Plots

Sep 25, 2018:

7:34 PM Ticket #534 (09 25 19:58 Operation Resume) created by ryanque
Person in Charge: Ramiro Yanque Experiment: EW_Drift-Faraday-Imaging 1) …
7:32 PM Ticket #533 (09 25 17:34 Spark Gaps Adjustment) created by ryanque
08:30 Spark Gaps Adjustment 11:40 Spark Gaps Adjustment 14:40 Spark Gaps …
7:30 PM Ticket #532 (09 25 19:05 Transmitter Power Measurements) created by ctipacti
08:00 TX Power sample (-70 dB coupling) Tx1 5.52 Vpp Tx3 5.80 Vpp Tx4 5.56 …
7:30 PM Ticket #531 (09 25 15:15 Noise Levels) created by ryanque
09:00 EW Drift Faraday A 24.61 C 23.02 A 25.43 B …
7:21 PM Ticket #530 (09 25 17:28 Imaging on) created by ryanque
Imaging starts Ch0 26.34 Ch1 25.91 Ch2 27.11 Ch3 27.97 Ch4 26.98 …
7:32 AM Ticket #529 (09 25 07:50 Operation Resume) created by avaldez
Person in Charge: ALEXANDER VALDEZ. Experiment: EW_Drift-Faraday-Imaging …
7:26 AM Ticket #528 (09 25 07:00 Transmitter Power Measurements) created by vquesada
00:00 TX Power sample (-70 dB coupling) Tx1 5.52 Vpp Tx3 5.76 Vpp Tx4 5.32 …
7:25 AM Ticket #527 (09 25 06:50 Spark gaps adjustment) created by avaldez
24-09-2018 20:30 Spark gaps adjustment 23:30 Spark gaps adjustment …
7:19 AM Ticket #526 (09 24 23:59 Plots) created by avaldez
PLOTS OF EXPERIMENT.

Sep 24, 2018:

11:27 PM Ticket #525 (09 24 23:00 Transmitter Power Measurements) created by vquesada
20:00 TX Power sample (-70 dB coupling) Tx1 5.52 Vpp Tx3 5.76 Vpp Tx4 5.44 …
8:17 PM Ticket #524 (09 24 20:00 Operation Resume) created by jrojas
Person in Charge: J. Rojas. Experiment: EW_Drift-Faraday-Imaging 1) 08:00 …
7:42 PM Ticket #523 (09 24 19:30 Plots) created by jrojas
7:33 PM Ticket #522 (09 24 19:08 Transmitter Power Measurements) created by ctipacti
08:00 TX Power sample (-70 dB coupling) Tx1 5.64 Vpp Tx3 5.76 Vpp Tx4 5.68 …
6:41 PM Ticket #521 (09 24 18:10 Noise levels) created by jrojas
24-09-2018 09:15 EW DRIFTS A:25.20 B:24.16 C:23.44 D:24.13 FARADAY …
6:31 PM Ticket #520 (09 24 17:30 Spark gaps adjustment) created by jrojas
24-09-2018 08:33 Spark gaps adjustment 11:30 Spark gaps adjustment 14:39 …
6:18 PM Ticket #519 (09 24 17:30 Imaging on) created by jrojas
8:20 AM Ticket #518 (09 24 08:00 Operation resume) created by pcondor
Person in Charge: P. Condor. Experiment: EW_Drift-Faraday-Imaging 1) 20:00 …
8:16 AM Ticket #517 (09 24 07:50 Plots) created by pcondor
Plots of rtis, spectras and parameters
7:26 AM Ticket #516 (09 24 07:00 Transmitter Power Measurements) created by vquesada
00:00 TX Power sample (-70 dB coupling) Tx1 5.44 Vpp Tx3 5.72 Vpp Tx4 5.44 …
7:20 AM Ticket #515 (09 24 05:30 Spark gaps adjustment) created by pcondor
23-09-2018 20:20 Spark gaps adjustment 23:20 Spark gaps adjustment …
7:17 AM Ticket #514 (09 24 06:10 Noise levels) created by pcondor
23-09-2018 21:15 EW DRIFTS A:27.09 B:26.30 C:25.34 D:26.24 FARADAY …
7:07 AM Ticket #513 (09 24 06:02 Imaging off) created by pcondor
Imaging off.
7:06 AM Ticket #512 (09 23 21:33 Problem with Transmitter) created by pcondor
Problem with Transmitter
6:31 AM Ticket #511 (09 24 00:00 Plots) created by pcondor
Plots of rtis, spectras and parameters.

Sep 23, 2018:

11:25 PM Ticket #510 (09 23 23:00 Transmitter Power Measurements) created by vquesada
20:00 TX Power sample (-70 dB coupling) Tx1 5.52 Vpp Tx3 5.76 Vpp Tx4 5.76 …
8:11 PM Ticket #509 (09 23 19:30 Transmitter report) created by ryaya
08:00 HV OFF-Failure detected on main plate power supply 09:00 HV ON 09:00 …
8:08 PM Ticket #508 (09 23 19:50 Operation Resume) created by imanay
Person in Charge: I. Manay. Experiment: ISR_Imaging 1) 08:00 - 20:00 2) …
7:11 PM Ticket #507 (09 23 17:16 Spark-gaps adjustments) created by imanay
23 Sep, 11:16 Spark gaps adjustment 23 Sep, 14:42 Spark gaps adjustment 23 …
7:07 PM Ticket #506 (09 23 09:10 Transmitters off) created by imanay
Due to change of limiter resistor, transmitters were off from 08:10 to …
8:03 AM Ticket #505 (09 23 07:30 Plots) created by jrojas
7:54 AM Ticket #504 (09 23 07:30 Spark-gaps adjustments) created by jrojas
22 Sep, 22:30 Spark gaps adjustment 23 Sep, 01:20 Spark gaps adjustment 23 …
7:50 AM Ticket #503 (09 23 07:25 Transmitter Power Measurements) created by rtadeo
20:00 TX Power sample (-70 dB coupling) Tx1 5.64 Vpp Tx3 5.76 Vpp Tx4 5.48 …
7:35 AM Ticket #502 (09 23 07:05 Noise levels) created by jrojas
22-09-2018 22:20 EW DRIFTS A:26.53 B:25.81 C:24.84 D:25.80 FARADAY A:27.99 …
7:02 AM Ticket #501 (09 23 06:09 Imaging off) created by jrojas
12:42 AM Ticket #500 (09 22 23:59 Plots) created by jrojas

Sep 22, 2018:

8:35 PM Ticket #499 (09 22 20:00 Operation Resume) created by pcondor
Person in Charge: P. Condor. Experiment: EW_Drift-Faraday-Imaging 1) 07:00 …
8:09 PM Ticket #498 (09 22 19:45 Transmitter Power Measurements) created by ctipacti
07:04 LV ON 07:14 HV ON 07:30 TX Power sample (-70 dB coupling) Tx1 5.70 …
8:01 PM Ticket #497 (09 22 07:45 Plots) created by pcondor
Plots of rtis, spectras and parameters.
7:50 PM Ticket #496 (09 22 19:19 Spark gaps adjustment) created by pcondor
22-09-2018 10:33 Spark gaps adjustment 13:33 Spark gaps adjustment 16:13 …
7:32 PM Ticket #495 (09 22 19:02 Noise levels) created by pcondor
22-09-2018 10:11 EW DRIFTS A:25.03 B:24.24 C:23.38 D:24.25 FARADAY …
7:11 PM Ticket #494 (09 22 17:47 Imaging on) created by pcondor
Imaging On.
7:10 PM Ticket #493 (09 22 08:49 VIPIR off) created by pcondor
VIPIR off
7:10 PM Ticket #492 (09 22 07:34 Restart experiment) created by pcondor
Restart experiment with transmitter to high power and digisonde is off. …
7:07 PM Ticket #491 (09 22 06:58 Change of configuration of EW Drifts) created by pcondor
Change of configuration of EW Drifts 1000 Km ipp

Sep 21, 2018:

9:04 AM Ticket #490 (09 21 08:39 Start of the experiment) created by imanay
Transmitters with all power.

Sep 20, 2018:

8:21 AM Ticket #489 (09 20 08:01 End) created by pcondor
End of campaign.
8:19 AM Ticket #488 (09 20 07:55 Plots) created by pcondor
Plots of rti and spectra
8:17 AM Ticket #487 (09 20 08:00 Operation Resume) created by pcondor
Person in Charge: P. Condor. Experiment: High Altitude Echoes 1) 20:00 - …
7:29 AM Ticket #486 (09 20 07:05 Transmitter Power Measurements) created by vquesada
00:00 TX Power sample (-70 dB coupling) TX1 5.12 Vpp Tx4 5.08 Vpp Line …
6:53 AM Ticket #485 (09 20 06:00 Spark gaps adjustment) created by pcondor
19-09-2018 21:05 Spark gaps adjustment 20-09-2018 00:00 Spark gaps …
6:51 AM Ticket #484 (09 20 06:11 Noise levels) created by pcondor
19-09-2018 21:03 A:14.85 B:15.32 20-09-2018 00:30 A:14.13 B:14.88 04:00 …
1:08 AM Ticket #483 (09 20 00:00 Plots) created by pcondor
Plots of rti and spectras.

Sep 19, 2018:

11:29 PM Ticket #482 (09 19 23:05 Transmitter Power Measurements) created by vquesada
20:00 TX Power sample (-70 dB coupling) TX1 5.36 Vpp Tx4 5.12 Vpp Line …
8:06 PM Ticket #481 (09:19 19:40 Plots) created by jrojas
8:01 PM Ticket #480 (09 19 19:37 Noise levels) created by jrojas
10:01 1:13.58 2:13.81 13:00 1:14.64 2:14.97 16:00 1:15.53 2:15.94 19:00 …
7:57 PM Ticket #479 (09 19 19:35 Transmitter Power Measurements) created by ctipacti
08:00 TX Power sample (-70 dB coupling) TX1 5.32 Vpp Tx4 5.04 Vpp Line …
6:41 PM Ticket #478 (09 19 18:18 Spark-gaps adjustments) created by jrojas
19 Sep, 09:11 Spark gaps adjustment 19 Sep, 12:11 Spark gaps adjustment 19 …
7:24 AM Ticket #477 (09 19 07:00 Transmitter Power Measurements) created by vquesada
00:00 TX Power sample (-70 dB coupling) TX1 5.28 Vpp Tx4 5.00 Vpp Line …
6:54 AM Ticket #476 (09 19 06:20 Spark-gaps adjustments) created by avaldez
18 Sep, 21:00 Spark gaps adjustment 18 Sep, 23:59 Spark gaps adjustment 19 …
6:51 AM Ticket #475 (09 19 06:00 Spark gaps adjustments) created by avaldez
18 Sep, 21:00 Spark gaps adjustment 18 Sep, 23:59 Spark gaps adjustment 19 …
6:49 AM Ticket #472 (09 19 06:00 Spark-gaps adjustments) closed by avaldez
fixed
6:47 AM Ticket #474 (09 19 07:59 Operation Resume) created by avaldez
Person in Charge: A. VALDEZ. Experiment: High altitude experiment 1) 20:00 …
6:40 AM Ticket #473 (09 19 00:25 Transmitters falls) created by avaldez
Transmitters were down during 2 minutes.
6:39 AM Ticket #472 (09 19 06:00 Spark-gaps adjustments) created by avaldez
18 Sep, 21:00 Spark gaps adjustment 18 Sep, 23:59 Spark gaps adjustment 19 …
6:33 AM Ticket #471 (09 18 23:59 PLOTS OF EXPERIMENT) created by avaldez

Sep 18, 2018:

11:24 PM Ticket #470 (09 18 23:00 Transmitter Power Measurements) created by vquesada
20:00 TX Power sample (-70 dB coupling) TX1 5.32 Vpp Tx4 5.10 Vpp Line …
8:06 PM Ticket #469 (09 18 19:50 Operation Resume) created by imanay
Person in Charge: I. Manay. Experiment: High altitude experiment 1) 09:30 …
7:58 PM Ticket #468 (09 18 19:30 Acquisition change) created by imanay
Number of channels of acquisition system was changed from 3 to 4 to see …
7:34 PM Ticket #467 (09 18 19:10 Transmitter power measurements) created by rtadeo
07:35 LV ON 07:55 TX Driver 4 Failure 09:10 LV ON 09:17 HV ON 09:30 Phase …
7:14 PM Ticket #466 (09 18 18:20 Spark-gaps adjustments) created by imanay
17 Sep, 12:27 Spark gaps adjustment 17 Sep, 15:35 Spark gaps adjustment 17 …
7:11 PM Ticket #465 (09 18 13:07 Transmitters falls) created by imanay
Transmitters were down during 3 minutes.
7:09 PM Ticket #464 (09 18 10:18 Adjustment at power of transmitters 1 and 4) created by imanay
A small differences at input power was observed, so they were adjusted.
7:04 PM Ticket #463 (09 18 10:00 6" pipeline adjustment) created by imanay
Experiment was stopped during 4 minutes, from 09:56 to 10:00, to adjust 6" …
7:01 PM Ticket #462 (09 18 09:30 Start of the experiment) created by imanay
After transmitters recovered, experiment started at 9:30.
6:54 PM Ticket #461 (09 18 12:00 Antenna measurements) created by imanay
49.72 49.92 49.92 Wup = 1.19 1.07 1.21 Wdw = 1.29 …

Sep 6, 2018:

8:15 AM Ticket #460 (09 06 08:00 Operation resume) created by pcondor
Person in Charge: P. Condor. Experiment: Hybrid 2 1) 20:00 - 08:00 2) …
8:10 AM Ticket #459 (09 06 07:50 Plots) created by pcondor
Plots of rtis and cross spectras.
7:18 AM Ticket #458 (09 06 07:00 Transmitter Power Measurements) created by vquesada
00:00 TX Power sample (-70 dB coupling) TX1 5.88 Vpp Tx4 5.80 Vpp Line …
7:06 AM Ticket #457 (09 06 05:36 Spark gaps adjustment) created by pcondor
05-09-2018 20:32 Spark gaps adjustment 23:35 Spark gaps adjustment …
7:02 AM Ticket #456 (09 06 06:30 Noise levels) created by pcondor
05-09-2018 21:05 A:25.36 B:26.43 06-09-2018 00:30 A:22.89 B:23.89 03:10 …
1:51 AM Ticket #455 (09 06 00:00 Plots) created by pcondor
Plots of rti and cross spectra

Sep 5, 2018:

11:23 PM Ticket #454 (09 05 23:05 Transmitter Power Measurements) created by vquesada
20:00 TX Power sample (-70 dB coupling) TX1 5.88 Vpp Tx4 5.80 Vpp Line …
8:12 PM Ticket #453 (09 05 19:50 Operation Resume) created by kkuyeng
Person in Charge: K.Kuyeng Experiment: Hybrid experiment 1) 08:00 - 20:00 …
7:48 PM Ticket #452 (09 05 19:30 Transmitter Power Measurements) created by ctipacti
08:00 TX Power sample (-70 dB coupling) TX1 5.80 Vpp Tx3 5.96 Vpp Line …
6:16 PM Ticket #451 (09 05 17:55 Spark-gaps adjustments) created by kkuyeng
05 Sep, 08:40 Spark gaps adjustment 05 Sep, 11:38 Spark gaps adjustment 05 …
7:44 AM Ticket #450 (09 05 06:00 Spark Gaps adjustment) created by AVALDEZ
04 Sep, 20:31 Spark gaps adjustment 04 Sep, 23:40 Spark gaps adjustment 05 …
7:42 AM Ticket #449 (09 05 07:59 Operation Resume) created by AVALDEZ
Person in Charge: A. VALDEZ. Experiment: Hybrid experiment 1) 20:00 PM - …
7:30 AM Ticket #448 (09 04 23:59 PLOTS OF EXPERIMENT) created by AVALDEZ
PLOTS
7:21 AM Ticket #447 (09 05 07:00 Transmitter Power Measurements) created by vquesada
00:00 TX Power sample (-70 dB coupling) TX1 5.80 Vpp Tx4 5.88 Vpp Line …

Sep 4, 2018:

11:23 PM Ticket #446 (09 04 23:05 Transmitter Power Measurements) created by vquesada
20:00 TX Power sample (-70 dB coupling) TX1 5.60 Vpp Tx4 5.76 Vpp Line …
7:35 PM Ticket #445 (09 04 19:50 Operation Resume) created by imanay
Person in Charge: I. Manay. Experiment: Hybrid experiment 1) 08:00 - 20:00 …
7:32 PM Ticket #444 (09 04 17:35 Spark-gaps adjustments) created by imanay
04 Sep, 08:15 Spark gaps adjustment 04 Sep, 11:28 Spark gaps adjustment 04 …
7:29 PM Ticket #443 (09 04 11:23 Transmitters fails) created by imanay
Transmitters were off from 10:48 to 11:23 (35 minutes)
7:28 PM Ticket #442 (09 04 10:22 Acquisition system changes) created by imanay
Acquisition resolution changed from 3.75 to 1.25 Km.
7:26 PM Ticket #441 (09 04 08:57 Transmitters fails) created by imanay
7:25 PM Ticket #440 (09 04 19:07 Transmitter Power Measurements) created by rtadeo
07:50 LV ON 07:53 HV ON 08:10 RF ON 08:13 TX Power sample (-70 dB …
7:24 PM Ticket #439 (09 04 08:13 Start of the experiment) created by imanay
Transmitters with all power.
Note: See TracTimeline for information about the timeline view.