PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/19-09:12:50
G01     96.9           28.8                5.9 +/-    1.61      10.6 +/-    1.61  0.030 / 0.050
G07     118.1          50.1                8.9 +/-    0.58      11.2 +/-    0.58  0.030 / 0.040
G08     41.8           15.8                3.4 +/-    2.63       8.2 +/-    2.63  0.040 / 0.060
G11     79.1           43.8                7.6 +/-    1.18      10.5 +/-    1.18  0.040 / 0.070
G13     301.7          34.4                4.8 +/-    1.20       7.7 +/-    1.20  0.110 / 0.190
G17     209.1          43.8                9.8 +/-    0.94      13.4 +/-    0.94  0.130 / 0.190
G18     70.8           24.6                6.1 +/-    0.91      12.0 +/-    0.91  0.090 / 0.200
G19     210.4          22.2                7.0 +/-    1.65      14.7 +/-    1.65  0.080 / 0.150
G28     318.9          59.9                5.4 +/-    0.74       6.1 +/-    0.74  0.030 / 0.030
G30     59.2           80.7                6.4 +/-    1.03       6.5 +/-    1.03  0.030 / 0.020