PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/14-07:57:50
G07     21.6           68.4                4.7 +/-    0.57       5.0 +/-    0.57  0.070 / 0.130
G08     66.3           50.2                5.2 +/-    0.56       6.6 +/-    0.56  0.050 / 0.110
G09     178.7          49.3                7.4 +/-    2.17       9.5 +/-    2.17  0.030 / 0.040
G11     131.6          28.2                6.2 +/-    1.05      11.2 +/-    1.05  0.030 / 0.040
G18     113.8          10.2              -10.4 +/-   16.70     -28.8 +/-   16.70  0.080 / 0.130
G23     159.5          18.3                5.3 +/-    3.10      12.2 +/-    3.10  0.140 / 0.140
G27     40.7           17.5                2.0 +/-    0.90       4.6 +/-    0.90  0.140 / 0.290
G28     254.0          39.0                5.5 +/-    1.12       8.1 +/-    1.12  0.080 / 0.290
G30     318.7          49.5                3.9 +/-    1.27       5.0 +/-    1.27  0.050 / 0.050