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Going to http://www-wanmon.slac.stanford.edu/cgi-wrap/connectivity.pl?format=csv&rawdata=pinger.usindh.edu.pk&days=6&monitor=pinger.pern.edu.pk and http://www-wanmon.slac.stanford.edu/cgi-wrap/connectivity.pl?format=csv&rawdata=pingerjms.pern.edu.pk&days=6&monitor=pinger.pern.edu.pk we collected the data for past 7 days and plotted it in excel to see the curves for Average RTT and Min RTT.

Min RTT from Pern Islamabad

Average RTT from Pern Islamabad

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Image Modified

Looking at the graphs one can see that there are rapid fluctuations in the data values for each node. Because of which the graphs show a scattered plot with a number of data points above and below, which seem to be on the same point on x-axis. However looking at the spreadsheet, it is observed that two data values are collected for each half an hour, and these two values fluctuate by about 0.3 ~ 0.4 ms for PoP node while it fluctuates by 0.63ms for usndh non-PoP node. Although we don't know the reason for this fluctuation , however we know that this fluctuation is continuous for both of the nodes and for all 7 of the days.

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pingerjms.pern.edu.pk

Min RTT (ms)

Avg RTT (ms)

Max RTT (ms)

Min

35.827

35.879

35.91

Avg

36.164 02

36.21 07

36.29 16

Max

36.48 203

36.623 293

37 36.934 711

Median

36.159 131

36.201 174

36.264 224

IQR

0.294

0.285 295

0.296 293

 Similarly, we have the min, avg, max, median and IQR for Min RTT, Average RTT and Max RTT for the usindh node in the table shown below.

pinger.usindh.edu.pk

Min RTT (ms)

Avg RTT (ms)

Max RTT (ms)

Min

36.388

36.973

37.057

Avg

37.34 04

37.54 23

37.84 511

Max

37.967 352

39.472 032

46 44.352 613

Median

37.311 023

37.614 252

37.711 381

IQR

0.609 271

0.622 27

0.619 332

  

These tables can also be viewed in the spreadsheet attached above.

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