PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/19-14:12:50
G01     105.0          26.6               11.8 +/-    0.87      22.2 +/-    0.87  0.030 / 0.030
G07     110.0          56.7               10.7 +/-    0.70      12.5 +/-    0.70  0.030 / 0.030
G08     41.7           18.0                6.6 +/-    0.97      15.3 +/-    0.97  0.070 / 0.130
G09     173.4          10.5               10.5 +/-    1.10      29.0 +/-    1.10  0.070 / 0.140
G11     85.3           42.6               10.6 +/-    0.51      14.8 +/-    0.51  0.040 / 0.050
G13     307.8          30.0                9.3 +/-    1.52      16.4 +/-    1.52  0.040 / 0.050
G17     206.6          40.0               12.9 +/-    1.34      18.7 +/-    1.34  0.040 / 0.090
G18     77.8           24.4                9.0 +/-    1.06      17.8 +/-    1.06  0.040 / 0.090
G28     321.7          61.3                8.7 +/-    1.02       9.8 +/-    1.02  0.040 / 0.060
G30     28.5           78.9                9.2 +/-    0.54       9.3 +/-    0.54  0.040 / 0.060