う〜む
これ見ると経路落ちっぽく見えるんだけどなぁ
（観測所より）

15 p3-1.core01.dfw03.atlas.cogentco.com (154.54.11.133) 202.991 ms p3-2.core01.dfw03.atlas.cogentco.com (154.54.10.29) 200.616 ms 204.930 ms
16 p13-0.core02.dfw01.atlas.cogentco.com (154.54.2.137) 302.676 ms 292.223 ms 368.023 ms
17 * p15-0.core01.mci01.atlas.cogentco.com (66.28.4.38) 331.873 ms *
18 p10-0.core02.sfo01.atlas.cogentco.com (66.28.4.209) 557.091 ms * *
19 g0-2.na22.b003070-0.sfo01.atlas.cogentco.com (38.112.39.134) 378.545 ms 370.851 ms 355.187 ms
20 PacificInternetExchange.demarc.cogentco.com (38.112.11.74) 355.985 ms 375.310 ms 357.547 ms
21 PIE.us (206.223.144.9) 356.912 ms 320.561 ms 317.251 ms
22 banana240.maido3.com (206.223.147.55) 324.959 ms 367.021 ms 380.791 ms