PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/17-11:12:50
G07     340.0          60.7                5.4 +/-    0.57       6.1 +/-    0.57  0.030 / 0.040
G08     103.3          52.3                5.0 +/-    0.33       6.2 +/-    0.33  0.030 / 0.040
G09     192.9          74.2                6.6 +/-    0.77       6.8 +/-    0.77  0.220 / 0.280
G11     145.5          14.2                2.6 +/-    2.18       6.6 +/-    2.18  0.180 / 0.220
G23     154.1          37.2                5.2 +/-    0.96       7.9 +/-    0.96  0.130 / 0.320
G27     55.6           32.0                3.2 +/-    1.93       5.3 +/-    1.93  0.140 / 0.530
G28     235.7          24.0                5.2 +/-    2.16      10.5 +/-    2.16  0.060 / 0.110
G30     302.9          36.6                5.2 +/-    1.30       8.1 +/-    1.30  0.090 / 0.090