PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/30-07:28:00
G01     96.6           30.0                5.7 +/-    1.02       9.9 +/-    1.02  0.060 / 0.110
G07     120.3          48.9                5.3 +/-    0.39       6.8 +/-    0.39  0.060 / 0.110
G08     41.7           9.8                 1.6 +/-    4.27       4.5 +/-    4.27  0.070 / 0.130
G11     73.5           40.9                4.8 +/-    1.41       6.8 +/-    1.41  0.080 / 0.150
G13     300.3          34.3                3.3 +/-    1.44       5.2 +/-    1.44  0.040 / 0.050
G17     209.8          50.4                6.0 +/-    0.58       7.5 +/-    0.58  0.050 / 0.050
G18     67.3           23.7                4.2 +/-    0.87       8.5 +/-    0.87  0.050 / 0.030
G19     212.5          18.9                3.5 +/-    2.82       7.9 +/-    2.82  0.030 / 0.020
G28     334.7          61.7                3.4 +/-    0.52       3.8 +/-    0.52  0.060 / 0.130
G30     71.0           80.3                4.0 +/-    0.85       4.0 +/-    0.85  0.070 / 0.120