PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/22-13:43:00
G01     112.9          22.2                8.7 +/-    0.74      18.2 +/-    0.74  0.030 / 0.030
G07     96.2           62.6                7.7 +/-    0.66       8.5 +/-    0.66  0.030 / 0.030
G08     42.6           24.8                5.8 +/-    1.05      11.4 +/-    1.05  0.100 / 0.190
G09     174.8          17.7                7.6 +/-    2.12      17.7 +/-    2.12  0.110 / 0.200
G11     96.5           42.0                7.3 +/-    0.38      10.3 +/-    0.38  0.060 / 0.060
G13     313.8          24.8                5.4 +/-    2.15      10.6 +/-    2.15  0.050 / 0.060
G17     203.5          31.8                8.0 +/-    1.66      13.5 +/-    1.66  0.040 / 0.090
G18     86.6           23.0                5.1 +/-    1.28      10.5 +/-    1.28  0.060 / 0.090
G28     305.6          59.6                6.3 +/-    0.79       7.2 +/-    0.79  0.030 / 0.040
G30     358.7          73.6                6.0 +/-    1.14       6.2 +/-    1.14  0.030 / 0.030