Alert sss2023zdkb: determined by 19 phases, type A

 LOCSAT solution with earthmodel iasp91 (with start solution, 19 phases used, weight 19):

  Tonga Islands  M=5.7  2023/12/24  14:52:59.7  20.79 S  174.28 W   10 km

  Stat  Net Date      Time               Amp  Per   Res  Dist  Az  mb  ML  mB
  SNZO  IU  23/12/24  14:58:01.2       108.3  1.1   2.0  22.5 202 5.2 0.0 0.0
  HNR   IU  23/12/24  14:58:43.8       117.6  1.2  -0.6  27.3 291 5.5 0.0 5.8
  CTAO  IU  23/12/24  15:00:08.3        13.3  0.8  -0.6  36.9 264 4.9 0.0 5.3
  VNDA  GT  23/12/24  15:02:52.3        13.6  1.0   0.6  57.9 186 4.9 0.0 0.0
  TNTI  GE  23/12/24  15:03:13.1       192.5  1.1  -0.1  60.9 283 6.1 0.0 6.1
  MBWA  IU  23/12/24  15:03:13.2        45.3  0.8  -1.6  61.1 257 5.6 0.0 0.0
  CASY  IU  23/12/24  15:03:40.6        60.9  1.1  -0.2  65.1 205 5.6 0.0 0.0
  PLAI  GE  23/12/24  15:03:48.2        58.8  1.0  -0.9  66.3 269 5.6 0.0 6.0
  QSPA  IU  23/12/24  15:04:06.9        98.7  1.5   0.4  69.2 180 5.7 0.0 0.0
  SBM   MY  23/12/24  15:04:45.1        33.8  1.8   0.3  75.5 278 5.1 0.0 5.9
  YSS   IU  23/12/24  15:04:57.9       106.8  1.2   1.1  78.0 332 5.8 0.0 6.0
  INCN  IU  23/12/24  15:05:12.1        75.1  1.2   1.1  80.5 316 5.7 0.0 0.0
  MNAI  GE  23/12/24  15:05:18.3       264.5  1.1  -0.8  81.7 268 6.3 0.0 6.5
  AY03  C1  23/12/24  15:05:21.8        28.8  0.7  -1.2  82.4 138 5.5 0.0 6.6
  SNAA  GE  23/12/24  15:05:46.6        37.1  1.9  -1.1  87.4 177 5.3 0.0 0.0
  CCB   AK  23/12/24  15:05:46.6        41.0  1.5  -0.8  87.8  11 5.4 0.0 0.0
  BJT   IC  23/12/24  15:05:53.6        36.8  2.2   0.9  88.7 314 5.2 0.0 6.1
  ENH   IC  23/12/24  15:05:56.7       131.8  1.4   1.3  89.2 303 6.0 0.0 6.4
  ULN   IU  23/12/24  15:06:35.5        10.2  1.1   0.3  98.0 318 5.5 0.0 0.0

 RMS-ERR:         0.97

 First location:  2023/12/24 15:14:17
 This location:   2023/12/24 15:37:11