PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/13-12:27:50
G01     320.1          15.6                2.8 +/-    3.15       6.8 +/-    3.15  0.050 / 0.050
G08     259.2          15.0                4.5 +/-    2.33      11.1 +/-    2.33  0.050 / 0.040
G10     75.2           54.0                3.9 +/-    0.34       4.7 +/-    0.34  0.030 / 0.030
G11     305.1          22.2                2.4 +/-    1.45       5.0 +/-    1.45  0.040 / 0.040
G14     288.5          70.6                5.0 +/-    0.51       5.2 +/-    0.51  0.110 / 0.280
G18     305.9          40.6                4.1 +/-    0.84       5.9 +/-    0.84  0.120 / 0.310
G20     102.7          31.2                5.4 +/-    0.61       9.2 +/-    0.61  0.120 / 0.290
G27     228.2          11.6                4.0 +/-    2.63      10.8 +/-    2.63  0.130 / 0.350
G31     178.5          36.3                6.1 +/-    1.79       9.4 +/-    1.79  0.120 / 0.350
G32     347.4          71.6                5.0 +/-    0.61       5.3 +/-    0.61  0.150 / 0.320