PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/13-12:42:50
G05     47.7           19.9                2.9 +/-    1.14       6.4 +/-    1.14  0.060 / 0.160
G10     234.7          13.0                3.7 +/-    3.11       9.6 +/-    3.11  0.060 / 0.150
G13     76.9           35.2                5.8 +/-    0.49       9.1 +/-    0.49  0.150 / 0.480
G15     121.0          51.7                9.0 +/-    0.43      11.2 +/-    0.43  0.160 / 0.400
G16     315.0          12.2                2.5 +/-    4.62       6.7 +/-    4.62  0.050 / 0.080
G20     247.9          38.9                8.1 +/-    1.17      12.1 +/-    1.17  0.060 / 0.070
G21     312.9          46.4                4.4 +/-    0.81       5.8 +/-    0.81  0.090 / 0.370
G25     200.0          12.9                2.0 +/-    3.19       5.1 +/-    3.19  0.090 / 0.420
G26     290.2          19.9                5.7 +/-    2.37      12.5 +/-    2.37  0.030 / 0.030
G29     150.8          76.0                8.1 +/-    1.36       8.4 +/-    1.36  0.030 / 0.030