PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/17-11:42:50
G01     89.3           31.1                2.2 +/-    1.47       3.7 +/-    1.47  0.030 / 0.030
G07     125.3          43.1                4.8 +/-    0.68       6.6 +/-    0.68  0.030 / 0.030
G08     42.4           12.0                2.3 +/-    1.43       6.1 +/-    1.43  0.040 / 0.050
G11     69.3           41.2                3.5 +/-    1.03       5.0 +/-    1.03  0.040 / 0.060
G13     294.2          37.1                7.8 +/-    2.86      11.9 +/-    2.86  0.040 / 0.050
G17     213.6          49.1                6.0 +/-    1.15       7.7 +/-    1.15  0.030 / 0.070
G18     63.4           23.7                2.6 +/-    0.82       5.2 +/-    0.82  0.090 / 0.130
G19     213.3          28.3                5.7 +/-    1.73      10.4 +/-    1.73  0.060 / 0.140
G28     333.6          61.2                3.2 +/-    0.47       3.6 +/-    0.47  0.090 / 0.160
G30     102.3          76.9                4.7 +/-    0.39       4.8 +/-    0.39  0.100 / 0.150