PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/15-02:27:30
G01     117.6          16.8                7.8 +/-    1.26      18.5 +/-    1.26  0.030 / 0.030
G07     76.5           67.4                5.3 +/-    0.58       5.7 +/-    0.58  0.040 / 0.030
G08     45.0           31.2                2.7 +/-    1.12       4.6 +/-    1.12  0.060 / 0.130
G09     173.5          23.2                8.1 +/-    1.19      16.4 +/-    1.19  0.130 / 0.100
G11     113.8          41.0                6.9 +/-    1.03      10.0 +/-    1.03  0.080 / 0.080
G13     317.6          19.9                3.0 +/-    2.04       6.6 +/-    2.04  0.050 / 0.110
G17     200.2          23.8                5.5 +/-    3.39      11.0 +/-    3.39  0.070 / 0.090
G28     278.7          50.4                5.2 +/-    2.37       6.5 +/-    2.37  0.070 / 0.080
G30     336.3          64.5                4.0 +/-    0.57       4.3 +/-    0.57  0.130 / 0.310