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One can also see the effect by looking at the RTTs for affected hosts as a function of time. This is seen below where we plot the daily RTT seen from SLAC versus the date and the Top Level Domain (TLD) of the country the host is located in. It is seen taht there is a big spike going from around 300 ms to over 1000 ms for January 30th, followed by recovery in several cases. The main countries affected are the United Arab Emirates (AE), Bahrain (BH), Bangladesh (BD), Bhutan (BT), Djibouti (DJ), India (IN), Indonesia (ID), Jordan (JO), Sri Lanka (LK), the Maldives (MV), Oman (OM), Qatar(QA), Palestine(PS), Saudia Arabia (SA), Sudan (SD), and Thailand (TH). This is less than 5% of the total hosts monitored worldwide.
To better illustrate the recovery for these 23 hosts in 13 countries, in the Figure below we show the median RTT and Loss seen from SLAC to these hosts for the last week in January. It is seen that the median RTT goes from a very stable ~300ms to almost 1000ms (a factor of more than 3) on January 30thJanuaryaround this time. The sharpr increase in RTT & Loss on January 30th is immediately obvious. It partially recovers on January 31st to about 550 ms and continues to improve for the next few days. The error bars show the variability of the results (as the Inter Quartile Range), which is seen to increase dramatically after January 29th. 
It also needs to be stressed that not all hosts in all countries were impacted, e.g. India: 2 of 8; Sri Lanka 3 of 5; Malvinas 3 of 5; Indonesia 1 of 7; Turkey: 1 of 3; Thailand 1 of 6. On the other hand all monitored hosts were impacted in: UAE(1), Bangladesh(2), Bahrain(2), Djibouti(1), Jordan(4), Oman(1), Qatar(1), Saudi Arabia(2). The numbers in parentheses are the number of hosts monitored. The list of countries in this region that have PingER monitored hosts, but none of the monitored hosts were noticeably impacted is also interesting. It includes: Egypt, Ethiopia, Iran, Israel, Lebanon, Pakistan, Palestine, Sudan, Central Asia, the Caucasus and East Asia. Some of these were lucky that they did not make major use of either of the two cables (e.g. Palestine is mainly served by SEAMEWE3), others had totally different routes from SLAC (e.g. via the Pacific for East Asia), others such as Israel had other alternate paths, other used satellite (e.g. Central Asia). We also did not observe complete loss of connectivity, associated with the outage, for any host.
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