PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/18-06:43:10
G01     110.7          21.9                3.5 +/-    1.32       7.3 +/-    1.32  0.040 / 0.030
G07     97.4           61.5                5.0 +/-    0.67       5.6 +/-    0.67  0.030 / 0.030
G08     42.9           26.3                1.3 +/-    2.43       2.5 +/-    2.43  0.110 / 0.130
G09     174.4          17.7                4.2 +/-    1.24       9.9 +/-    1.24  0.160 / 0.130
G11     100.0          43.8                6.1 +/-    0.79       8.4 +/-    0.79  0.130 / 0.220
G13     313.2          26.1                2.6 +/-    2.90       5.0 +/-    2.90  0.110 / 0.170
G17     203.0          30.8                5.4 +/-    1.61       9.3 +/-    1.61  0.030 / 0.040
G28     293.2          55.2                3.7 +/-    1.90       4.4 +/-    1.90  0.030 / 0.040
G30     352.9          72.9                4.6 +/-    0.43       4.8 +/-    0.43  0.060 / 0.070