PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/11-13:12:30
G07     4.2            66.5                6.3 +/-    0.85       6.8 +/-    0.85  0.060 / 0.060
G08     69.3           50.1                5.6 +/-    0.61       7.1 +/-    0.61  0.070 / 0.050
G09     179.0          53.3                8.4 +/-    0.49      10.2 +/-    0.49  0.030 / 0.030
G11     133.5          24.6                9.2 +/-    2.02      18.2 +/-    2.02  0.030 / 0.030
G23     159.1          22.7                7.0 +/-    1.46      14.4 +/-    1.46  0.120 / 0.230
G27     42.6           20.7                6.5 +/-    1.61      14.1 +/-    1.61  0.080 / 0.210
G28     253.5          42.3                7.4 +/-    3.24      10.3 +/-    3.24  0.070 / 0.130
G30     315.6          46.5                5.6 +/-    0.75       7.4 +/-    0.75  0.080 / 0.150