PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/10-10:27:50
G01     108.6          24.7                7.0 +/-    1.69      13.9 +/-    1.69  0.030 / 0.020
G07     104.9          58.8                8.0 +/-    1.23       9.2 +/-    1.23  0.030 / 0.020
G08     41.8           20.0                3.6 +/-    2.11       7.9 +/-    2.11  0.070 / 0.150
G09     172.4          11.4                6.3 +/-    3.18      17.0 +/-    3.18  0.080 / 0.130
G11     89.5           42.5                7.7 +/-    0.79      10.8 +/-    0.79  0.080 / 0.130
G13     310.6          28.0                3.0 +/-    1.39       5.5 +/-    1.39  0.080 / 0.140
G17     204.7          37.7                6.8 +/-    1.15      10.3 +/-    1.15  0.030 / 0.030
G18     80.7           23.8                5.2 +/-    1.88      10.5 +/-    1.88  0.040 / 0.030
G28     313.1          60.4                5.0 +/-    1.01       5.7 +/-    1.01  0.080 / 0.150
G30     9.9            76.7                6.3 +/-    0.66       6.4 +/-    0.66  0.090 / 0.140