PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/14-07:57:40
G07     21.6           68.4                4.5 +/-    0.83       4.8 +/-    0.83  0.030 / 0.040
G08     66.3           50.2                5.4 +/-    1.05       6.8 +/-    1.05  0.030 / 0.040
G09     178.7          49.3                7.7 +/-    0.80       9.9 +/-    0.80  0.130 / 0.380
G11     131.6          28.2                5.5 +/-    2.25       9.9 +/-    2.25  0.190 / 0.210
G18     113.8          10.2               -3.2 +/-   21.81      -8.9 +/-   21.81  0.050 / 0.050
G23     159.5          18.3                5.6 +/-    2.63      12.9 +/-    2.63  0.040 / 0.040
G27     40.7           17.5                3.4 +/-    1.95       7.9 +/-    1.95  0.040 / 0.050
G28     254.0          39.0                4.7 +/-    1.45       7.0 +/-    1.45  0.040 / 0.040
G30     318.7          49.5                3.5 +/-    1.01       4.4 +/-    1.01  0.040 / 0.050