PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/08-02:57:50
G01     117.1          17.2                7.8 +/-    1.19      18.5 +/-    1.19  0.040 / 0.020
G07     78.4           67.0                4.7 +/-    0.37       5.0 +/-    0.37  0.030 / 0.030
G08     44.9           31.0                2.6 +/-    1.14       4.5 +/-    1.14  0.040 / 0.040
G09     173.7          23.0                6.6 +/-    0.90      13.4 +/-    0.90  0.030 / 0.040
G11     112.7          41.2                7.0 +/-    0.66      10.0 +/-    0.66  0.150 / 0.090
G13     317.4          20.4                1.4 +/-    3.19       3.0 +/-    3.19  0.110 / 0.140
G17     200.4          24.3                5.7 +/-    3.57      11.4 +/-    3.57  0.080 / 0.080
G28     279.8          50.8                5.7 +/-    2.29       7.2 +/-    2.29  0.070 / 0.080
G30     337.3          65.2                3.8 +/-    0.51       4.1 +/-    0.51  0.060 / 0.110