PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/22-00:57:50
G07     10.5           67.3                5.9 +/-    0.42       6.4 +/-    0.42  0.100 / 0.150
G08     67.2           50.0                6.5 +/-    0.55       8.2 +/-    0.55  0.120 / 0.180
G09     181.3          52.9                9.2 +/-    0.58      11.2 +/-    0.58  0.050 / 0.050
G11     133.5          25.3                9.7 +/-    5.87      18.9 +/-    5.87  0.040 / 0.040
G23     159.7          21.2                7.3 +/-    1.15      15.6 +/-    1.15  0.030 / 0.030
G27     41.0           17.9                3.5 +/-    2.12       8.0 +/-    2.12  0.030 / 0.030
G28     257.1          44.8                8.0 +/-    3.62      10.8 +/-    3.62  0.040 / 0.040
G30     321.6          51.8                4.9 +/-    0.92       6.1 +/-    0.92  0.040 / 0.040