PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/11-13:27:50
G01     112.2          21.6                5.8 +/-    2.08      12.3 +/-    2.08  0.050 / 0.060
G07     99.4           59.0                7.1 +/-    0.75       8.2 +/-    0.75  0.040 / 0.060
G08     43.4           28.2                4.2 +/-    1.81       7.6 +/-    1.81  0.070 / 0.080
G09     176.4          20.7                6.5 +/-    3.23      14.1 +/-    3.23  0.060 / 0.080
G11     97.7           42.9                7.2 +/-    0.68      10.0 +/-    0.68  0.030 / 0.040
G13     313.6          25.4                3.6 +/-    2.21       7.0 +/-    2.21  0.030 / 0.030
G17     203.5          28.5                7.6 +/-    1.39      13.7 +/-    1.39  0.080 / 0.140
G18     86.2           22.8                4.9 +/-    2.88      10.1 +/-    2.88  0.070 / 0.150
G28     294.9          56.2                5.5 +/-    1.30       6.5 +/-    1.30  0.130 / 0.210
G30     5.8            74.9                5.4 +/-    0.69       5.5 +/-    0.69  0.130 / 0.190