PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/12-04:27:50
G01     63.8           30.7                4.8 +/-    1.62       8.4 +/-    1.62  0.030 / 0.040
G07     139.2          27.8                6.8 +/-    0.75      12.4 +/-    0.75  0.030 / 0.040
G11     52.7           32.2                4.0 +/-    0.74       6.8 +/-    0.74  0.050 / 0.120
G13     267.7          38.1                8.4 +/-    1.14      12.6 +/-    1.14  0.080 / 0.140
G15     296.0          17.2                3.5 +/-    1.62       8.2 +/-    1.62  0.050 / 0.100
G17     240.2          73.6                7.8 +/-    0.59       8.1 +/-    0.59  0.050 / 0.080
G19     226.3          48.1                9.7 +/-    0.93      12.6 +/-    0.93  0.070 / 0.120
G28     8.8            61.1                3.8 +/-    0.60       4.3 +/-    0.60  0.070 / 0.100
G30     140.4          62.4                9.1 +/-    0.71      10.1 +/-    0.71  0.040 / 0.060