PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/19-09:12:50
G01     40.2           15.4                2.3 +/-    2.21       5.7 +/-    2.21  0.100 / 0.090
G06     173.4          38.9                5.3 +/-    1.12       7.8 +/-    1.12  0.080 / 0.110
G13     236.7          23.1                5.6 +/-    1.32      11.4 +/-    1.32  0.130 / 0.320
G15     270.4          12.4                4.1 +/-    1.64      10.9 +/-    1.64  0.140 / 0.310
G17     358.2          71.7                5.3 +/-    0.35       5.6 +/-    0.35  0.070 / 0.080
G19     278.6          70.7                3.7 +/-    0.66       3.9 +/-    0.66  0.060 / 0.060
G24     317.0          17.2                3.0 +/-    1.62       7.2 +/-    1.62  0.030 / 0.050
G28     61.9           52.9                4.7 +/-    0.88       5.8 +/-    0.88  0.030 / 0.060
G30     155.3          30.8                5.0 +/-    1.30       8.6 +/-    1.30  0.260 / 0.340