PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/12-13:12:40
G01     85.0           32.7                4.0 +/-    2.77       6.7 +/-    2.77  0.030 / 0.020
G07     129.3          41.6                6.8 +/-    0.61       9.7 +/-    0.61  0.020 / 0.020
G11     62.9           37.0                5.6 +/-    0.92       8.5 +/-    0.92  0.040 / 0.050
G13     289.1          37.3                6.8 +/-    1.91      10.4 +/-    1.91  0.040 / 0.060
G17     217.8          59.2                7.3 +/-    1.32       8.3 +/-    1.32  0.080 / 0.100
G18     58.9           22.5                3.9 +/-    1.83       8.1 +/-    1.83  0.060 / 0.150
G19     216.9          27.7                5.1 +/-    2.55       9.4 +/-    2.55  0.060 / 0.090
G28     357.1          61.4                4.4 +/-    0.75       5.0 +/-    0.75  0.060 / 0.100
G30     115.0          74.3                5.5 +/-    0.36       5.6 +/-    0.36  0.120 / 0.220