PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/29-17:58:00
G01     96.9           30.0               17.1 +/-    1.15      29.9 +/-    1.15  0.060 / 0.210
G07     119.5          50.9               17.9 +/-    0.42      22.3 +/-    0.42  0.070 / 0.180
G08     42.0           13.8               10.6 +/-    1.45      27.0 +/-    1.45  0.030 / 0.060
G11     76.5           42.0               17.9 +/-    0.76      25.2 +/-    0.76  0.030 / 0.060
G13     301.0          33.7               19.1 +/-    1.28      31.0 +/-    1.28  0.030 / 0.030
G17     211.2          45.2               18.9 +/-    1.46      25.4 +/-    1.46  0.030 / 0.030
G18     70.2           24.7               15.9 +/-    1.10      31.3 +/-    1.10  0.040 / 0.060
G19     212.4          20.1               19.1 +/-    4.04      41.9 +/-    4.04  0.040 / 0.060
G28     337.7          61.9               16.5 +/-    0.67      18.5 +/-    0.67  0.050 / 0.070
G30     79.9           78.9               18.4 +/-    0.57      18.8 +/-    0.57  0.050 / 0.060