PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/23-07:57:30
G01     95.9           30.2                6.3 +/-    1.23      11.0 +/-    1.23  0.090 / 0.120
G07     120.9          48.5                7.3 +/-    0.60       9.4 +/-    0.60  0.100 / 0.120
G11     72.8           40.8                5.6 +/-    1.43       8.0 +/-    1.43  0.030 / 0.030
G13     299.7          34.6                6.0 +/-    1.04       9.6 +/-    1.04  0.030 / 0.030
G17     210.3          51.0                8.0 +/-    0.57      10.0 +/-    0.57  0.050 / 0.040
G18     66.8           23.7                4.5 +/-    1.43       9.1 +/-    1.43  0.040 / 0.050
G19     212.8          19.3                5.7 +/-    1.45      12.9 +/-    1.45  0.070 / 0.120
G28     336.2          61.8                4.1 +/-    0.54       4.6 +/-    0.54  0.080 / 0.110
G30     74.9           80.2                4.5 +/-    0.66       4.5 +/-    0.66  0.070 / 0.130