PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/19-08:12:50
G01     62.3           30.6                4.5 +/-    1.03       7.9 +/-    1.03  0.030 / 0.040
G06     179.8          12.0                1.4 +/-   19.42       3.8 +/-   19.42  0.040 / 0.030
G07     140.1          24.9                3.9 +/-    1.53       7.6 +/-    1.53  0.170 / 0.260
G11     50.8           29.2                3.7 +/-    1.44       6.6 +/-    1.44  0.120 / 0.230
G13     265.6          37.5                6.2 +/-    2.71       9.4 +/-    2.71  0.260 / 0.640
G15     296.3          16.4                5.6 +/-    2.09      13.4 +/-    2.09  0.390 / 0.790
G17     243.4          73.2                6.5 +/-    0.37       6.7 +/-    0.37  0.060 / 0.050
G19     228.1          49.6                6.4 +/-    2.70       8.1 +/-    2.70  0.040 / 0.050
G28     14.6           60.7                5.1 +/-    1.42       5.8 +/-    1.42  0.080 / 0.120
G30     141.7          59.1                6.3 +/-    0.40       7.2 +/-    0.40  0.060 / 0.130