PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/08-12:42:50
G07     329.4          56.6                4.4 +/-    0.77       5.1 +/-    0.77  0.060 / 0.110
G08     102.6          51.2                7.3 +/-    0.72       9.1 +/-    0.72  0.060 / 0.100
G09     190.1          74.9                6.7 +/-    0.50       6.9 +/-    0.50  0.050 / 0.060
G11     146.9          12.0                6.6 +/-    1.98      17.7 +/-    1.98  0.050 / 0.080
G23     154.3          42.5                7.7 +/-    0.93      10.8 +/-    0.93  0.120 / 0.190
G27     57.3           32.9                4.8 +/-    0.66       7.9 +/-    0.66  0.080 / 0.210
G28     235.6          27.7                7.0 +/-    2.51      12.9 +/-    2.51  0.040 / 0.050
G30     299.9          33.1                5.6 +/-    1.43       9.2 +/-    1.43  0.040 / 0.050