PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/16-09:58:00
G07     326.4          55.4                3.3 +/-    0.75       4.0 +/-    0.75  0.070 / 0.120
G08     103.8          50.0                5.7 +/-    1.51       7.2 +/-    1.51  0.060 / 0.120
G09     189.9          76.6                3.5 +/-    0.34       3.5 +/-    0.34  0.030 / 0.060
G11     147.7          10.8               -0.8 +/-   16.49      -2.3 +/-   16.49  0.050 / 0.060
G23     154.1          47.3                6.0 +/-    0.58       7.9 +/-    0.58  0.040 / 0.070
G27     60.2           34.1                2.7 +/-    0.32       4.4 +/-    0.32  0.040 / 0.050
G28     233.6          25.4                7.2 +/-    0.83      13.9 +/-    0.83  0.050 / 0.070
G30     297.4          30.6                3.2 +/-    0.75       5.6 +/-    0.75  0.030 / 0.070