PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/30-08:58:10
G01     79.9           32.3                4.6 +/-    0.96       7.7 +/-    0.96  0.040 / 0.070
G07     131.1          37.9                6.3 +/-    0.88       9.5 +/-    0.88  0.030 / 0.070
G11     62.0           38.5                5.5 +/-    1.39       8.2 +/-    1.39  0.050 / 0.090
G13     284.9          38.8               -1.0 +/-    2.18      -1.4 +/-    2.18  0.050 / 0.110
G15     310.0          12.8                1.7 +/-    1.14       4.4 +/-    1.14  0.110 / 0.230
G17     219.3          58.8                7.0 +/-    1.45       8.0 +/-    1.45  0.130 / 0.220
G18     56.1           21.8                3.8 +/-    2.50       7.9 +/-    2.50  0.110 / 0.110
G19     217.1          35.7                6.5 +/-    1.36      10.2 +/-    1.36  0.100 / 0.100
G28     346.6          61.5                3.6 +/-    0.76       4.1 +/-    0.76  0.030 / 0.030
G30     121.7          72.8                4.9 +/-    0.33       5.1 +/-    0.33  0.030 / 0.030