PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/16-09:57:40
G01     79.1           32.4                3.5 +/-    0.98       5.8 +/-    0.98  0.040 / 0.070
G07     131.7          36.7                5.3 +/-    0.77       8.2 +/-    0.77  0.040 / 0.070
G11     60.9           37.8                4.2 +/-    1.71       6.3 +/-    1.71  0.080 / 0.050
G13     283.9          38.8                0.1 +/-    4.26       0.1 +/-    4.26  0.060 / 0.060
G15     310.0          12.6                3.8 +/-    2.02      10.0 +/-    2.02  0.100 / 0.100
G17     220.2          58.9                6.9 +/-    1.49       8.0 +/-    1.49  0.090 / 0.090
G18     55.3           21.5                3.7 +/-    3.01       7.9 +/-    3.01  0.150 / 0.280
G19     217.6          36.3                5.3 +/-    1.27       8.2 +/-    1.27  0.220 / 0.360
G28     348.7          61.6                4.8 +/-    0.77       5.4 +/-    0.77  0.030 / 0.030
G30     123.7          71.5                6.1 +/-    1.02       6.4 +/-    1.02  0.030 / 0.030