PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/11-13:12:50
G01     54.7           27.9                4.6 +/-    1.58       8.4 +/-    1.58  0.040 / 0.040
G07     143.4          15.6                5.4 +/-    2.18      13.2 +/-    2.18  0.040 / 0.050
G11     46.4           21.2                5.3 +/-    3.12      11.4 +/-    3.12  0.230 / 0.180
G13     256.0          34.3                7.7 +/-    0.76      12.3 +/-    0.76  0.100 / 0.340
G15     290.1          16.1                4.4 +/-    1.33      10.8 +/-    1.33  0.030 / 0.050
G17     263.2          75.2                6.9 +/-    0.64       7.1 +/-    0.64  0.030 / 0.020
G18     39.1           9.6                 4.0 +/-    4.04      11.4 +/-    4.04  0.120 / 0.080
G19     237.1          56.3                7.3 +/-    2.23       8.6 +/-    2.23  0.100 / 0.080
G28     32.0           58.6                4.6 +/-    1.06       5.3 +/-    1.06  0.110 / 0.250
G30     146.6          47.9                6.2 +/-    0.24       8.1 +/-    0.24  0.120 / 0.250