PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/22-07:27:40
G07     328.3          56.4                2.3 +/-    1.26       2.7 +/-    1.26  0.070 / 0.110
G08     102.3          50.3                6.1 +/-    0.66       7.7 +/-    0.66  0.080 / 0.130
G09     180.1          73.3                5.4 +/-    0.86       5.6 +/-    0.86  0.040 / 0.070
G11     147.1          11.4                4.9 +/-    2.18      13.4 +/-    2.18  0.030 / 0.060
G23     154.6          47.0                5.9 +/-    1.06       7.7 +/-    1.06  0.040 / 0.080
G27     60.1           34.4                3.4 +/-    0.66       5.4 +/-    0.66  0.060 / 0.070
G28     234.0          25.5                4.7 +/-    1.35       9.1 +/-    1.35  0.040 / 0.070
G30     298.0          31.1                2.8 +/-    1.46       4.8 +/-    1.46  0.040 / 0.080