PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/11-10:12:30
G07     19.5           68.0                3.7 +/-    0.64       3.9 +/-    0.64  0.060 / 0.130
G08     70.9           52.1                3.5 +/-    1.07       4.3 +/-    1.07  0.060 / 0.130
G09     180.1          52.4                6.7 +/-    0.67       8.2 +/-    0.67  0.030 / 0.030
G11     132.4          27.0                4.0 +/-    2.59       7.5 +/-    2.59  0.030 / 0.040
G23     158.7          18.7                4.6 +/-    0.96      10.5 +/-    0.96  0.100 / 0.140
G27     41.6           19.2                2.7 +/-    2.23       6.0 +/-    2.23  0.260 / 0.140
G28     252.4          38.2                4.7 +/-    1.61       7.0 +/-    1.61  0.040 / 0.040
G30     318.3          49.3                2.6 +/-    0.65       3.3 +/-    0.65  0.040 / 0.050