Alert Survey - Earthquake parameters in region Off east coast of Honshu, Japan, date 2026-04-20 07:52:59, lat 39.99, lon 143.19

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Earthquake parameters in region Off east coast of Honshu, Japan,
date 2026-04-20 07:52:59, lat 39.99, lon 143.19, depth 33 km, ms: 7.8/50
detemined with station data:

N	Code	Time	Phase	Delta	Azimuth	Residual	Ms	mb	Network
1	ERM	07:53:32.0	P	2.03	359	0.5	-	-	HSS
2	JKA	07:54:01.1	P	4.15	354	0.5	-	-	IDC
3	YUK	07:54:05.1	P	4.51	25	-0.4	-	-	SAGSR
4	MAJO	07:54:14.5	P	5.21	230	-0.8	-	-	JMA
5	YSS	07:54:40.7	P	6.98	358	1.2	-	-	SAGSR
6	VLAR	07:55:10.5	P	9.03	294	2.8	-	-	OBGSR
7	USA0B	07:55:12.6	P	9.33	300	0.9	-	-	RIPT
8	PSTR	07:55:16.5	P	9.69	290	-0.2	-	-	OBGSR
9	KLR	07:55:52.3	P	12.32	322	-0.3	-	-	OBGSR
10	TJN	07:56:01.0	P	12.96	259	-0.4	-	-	TJN
11	SKR	07:56:17.3	P	14.01	36	1.6	-	-	SAGSR
12	PEA0B	07:56:46.7	P	16.44	32	-1.0	-	-	RIPT
13	PET	07:56:50.4	P	16.78	34	-1.6	-	-	KAGSR
14	ZEA	07:56:58.4	P	17.49	327	-2.5	-	-	SAGSR
15	JOW	07:57:05.0	P	18.05	228	-2.8	-	-	JMA
16	MA2	07:57:32.4	P	20.19	11	1.0	7.3	6.5	NEGSR
17	TUP	07:57:42.0	P	21.26	321	-1.0	7.8	7.1	BAGSR
18	YAK	07:58:04.3	P	23.56	344	-2.7	7.4	7.1	YAGSR
19	SEY	07:58:07.4	P	23.63	11	-0.3	7.6	7.0	NEGSR
20	ULN	07:58:37.9	P	27.00	299	-0.5	8.2	6.3	OBM
21	IRK	07:58:59.7	P	29.27	308	1.0	8.0	6.9	BYKL
22	ZAK	07:59:01.9	P	29.66	304	-0.2	8.2	6.3	BAGSR
23	BILL	07:59:12.6	P	30.87	17	-0.2	7.3	6.0	NEGSR
24	MOY	07:59:15.7	P	31.21	306	-0.1	7.5	6.6	BAGSR
25	ORL	07:59:23.3	P	32.02	308	0.4	7.9	7.0	BAGSR
26	TIXI	07:59:26.7	P	32.55	352	-0.8	7.5	6.7	YAGSR
27	DGZ	08:00:28.6	P	39.87	303	-1.4	8.5	-	ASGSR
28	ZAA0B	08:00:38.7	P	41.02	310	-0.8	7.7	6.9	RIPT
29	NVS	08:00:46.0	P	41.87	311	-0.4	7.9	6.2	ASGSR
30	ZSN	08:00:48.1	P	41.94	300	1.1	-	7.3	SOME
31	CHTO	08:00:58.6	P	43.40	254	-0.3	7.6	6.0	BKK
32	CM31	08:01:00.5	P	43.63	254	-0.2	7.7	6.2	BKK
33	MK31	08:01:01.7	P	43.80	300	-0.3	8.2	7.0	NNC
34	KURK	08:01:13.1	P	45.27	306	-0.7	7.6	7.0	NNC
35	COLA	08:01:20.2	P	45.85	34	1.8	7.4	6.8	NEIC
36	SHLS	08:01:24.4	P	46.76	296	-1.1	-	6.9	SOME
37	PMG	08:01:46.8	P	49.28	175	1.7	7.2	6.5	PMG
38	BORK	08:01:48.2	P	49.69	311	-0.0	8.2	6.7	NNC
39	KAPI	08:01:47.0	P	49.71	211	-1.3	7.2	7.2	DJA
40	BTLS	08:01:50.7	P	49.81	300	1.6	-	6.9	SOME
41	AAK	08:01:53.1	P	50.36	297	-0.1	8.2	6.3	KYRG
42	ARTI	08:02:28.8	P	55.21	318	-0.3	8.5	7.0	OBGSR
43	JZAX	08:02:34.5	P	56.06	296	-0.6	8.1	6.7	IRIS-IDA
44	KBS	08:02:50.7	P	57.99	350	1.8	7.4	6.5	BER
45	KIRV	08:02:53.4	P	58.75	322	-0.8	8.0	7.4	RIPT
46	LVZ	08:03:03.2	P	60.00	336	0.4	7.7	6.7	OBGSR
47	KLMR	08:03:16.4	P	62.02	327	-0.2	8.2	6.7	OBGSR
48	PALK	08:03:31.4	P	64.37	257	-0.8	-	7.0	PALK
49	VALR	08:03:36.1	P	65.14	331	-1.1	7.8	7.2	OBGSR
50	MSVF	08:03:42.7	P	65.98	143	0.1	7.4	6.8	SVA
51	OBN	08:03:46.3	P	66.57	323	-0.2	8.3	6.8	OBGSR
52	MAK	08:03:55.1	P	67.74	308	1.2	7.9	7.1	OBGSR
53	VSU	08:03:58.3	P	68.62	330	-1.1	8.3	7.4	VSU
54	BTLR	08:03:59.5	P	68.69	308	-0.3	7.7	7.4	DAGSR
55	ZEI	08:04:08.0	P	70.01	309	0.0	7.8	6.6	OBGSR
56	KIV	08:04:09.2	P	70.03	311	1.1	8.3	7.3	OBGSR
57	KBZ	08:04:08.4	P	70.04	311	0.3	8.0	7.3	RIPT
58	SHA1	08:04:10.1	P	70.17	311	1.1	7.9	7.3	KMGSR
59	NEUR	08:04:12.3	P	70.43	310	1.7	8.2	6.7	OBGSR
60	MNK	08:04:13.0	P	70.85	326	-0.1	-	6.5	BELR
61	GNI	08:04:15.9	P	71.13	307	1.1	8.1	7.0	NSSP
62	STKA	08:04:16.7	P	71.51	181	-0.4	7.3	6.4	AUST
63	SOC	08:04:19.8	P	71.95	312	0.1	8.1	6.9	OBGSR
64	AKBB	08:04:23.9	P	72.81	323	-1.0	8.1	7.2	NSAU
65	KONO	08:04:31.1	P	73.60	337	1.6	7.5	6.2	BER
66	SIM	08:04:32.8	P	74.19	316	-0.2	7.9	6.8	KRYM
67	YAL	08:04:34.8	P	74.46	315	0.3	-	-	KRYM
68	SEV	08:04:35.8	P	74.73	316	-0.3	-	-	KRYM
69	PFO	08:04:45.7	P	76.27	58	0.7	7.0	6.5	LJC
70	BR131	08:04:54.2	P	77.93	312	-0.1	7.8	6.7	ISK
71	KHC	08:05:09.5	P	80.74	329	-0.1	8.0	6.8	GFU
72	ANMO	08:05:16.4	P	81.64	51	2.1	7.3	6.5	ALQ