PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/13-13:27:50
G01     108.7          23.7                9.1 +/-    1.18      18.4 +/-    1.18  0.040 / 0.060
G07     105.3          56.4                9.3 +/-    0.82      10.9 +/-    0.82  0.040 / 0.050
G08     42.6           25.1                8.4 +/-    1.58      16.4 +/-    1.58  0.070 / 0.070
G09     175.8          17.2                6.2 +/-    2.26      14.7 +/-    2.26  0.040 / 0.070
G11     92.5           43.5               10.0 +/-    0.79      13.8 +/-    0.79  0.030 / 0.030
G13     311.1          28.0                5.7 +/-    1.71      10.5 +/-    1.71  0.030 / 0.040
G17     204.7          32.1                7.7 +/-    1.51      12.9 +/-    1.51  0.080 / 0.130
G18     82.2           23.7                6.0 +/-    1.48      12.2 +/-    1.48  0.100 / 0.130
G28     301.4          57.5                6.7 +/-    0.76       7.7 +/-    0.76  0.130 / 0.220
G30     18.6           77.2                7.9 +/-    0.55       8.1 +/-    0.55  0.130 / 0.220