PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/08-23:28:00
G07     353.4          64.1                7.3 +/-    0.71       8.0 +/-    0.71  0.030 / 0.050
G08     80.2           53.0                9.1 +/-    0.47      11.0 +/-    0.47  0.030 / 0.050
G09     183.8          61.3               11.4 +/-    1.56      12.8 +/-    1.56  0.080 / 0.110
G11     139.7          20.2               12.0 +/-    1.82      26.4 +/-    1.82  0.040 / 0.110
G23     158.4          28.1               10.8 +/-    1.00      19.8 +/-    1.00  0.050 / 0.140
G27     45.0           23.5                5.0 +/-    1.33      10.2 +/-    1.33  0.060 / 0.130
G28     248.8          39.5                9.7 +/-    1.02      14.2 +/-    1.02  0.050 / 0.140
G30     315.3          47.1                6.1 +/-    1.01       8.0 +/-    1.01  0.050 / 0.130