PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/09-22:58:00
G07     333.0          57.9                6.6 +/-    0.42       7.7 +/-    0.42  0.110 / 0.190
G08     101.6          52.3                8.3 +/-    0.46      10.2 +/-    0.46  0.100 / 0.120
G09     194.6          74.2                8.6 +/-    0.71       8.9 +/-    0.71  0.040 / 0.040
G11     147.6          12.5                9.1 +/-    2.07      24.0 +/-    2.07  0.030 / 0.040
G23     155.2          40.3                8.6 +/-    0.78      12.4 +/-    0.78  0.080 / 0.090
G27     54.1           30.9                6.3 +/-    2.38      10.8 +/-    2.38  0.070 / 0.110
G28     237.9          30.5                8.7 +/-    1.81      15.2 +/-    1.81  0.220 / 0.390
G30     304.9          38.9                6.6 +/-    1.49       9.7 +/-    1.49  0.120 / 0.340