PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/25-00:43:00
G07     318.3          52.6                4.4 +/-    1.75       5.4 +/-    1.75  0.030 / 0.050
G08     115.1          46.0                7.8 +/-    0.85      10.4 +/-    0.85  0.030 / 0.050
G09     238.2          83.9                3.8 +/-    0.49       3.8 +/-    0.49  0.130 / 0.250
G16     43.2           18.9                1.3 +/-    0.88       3.0 +/-    0.88  0.130 / 0.310
G23     150.5          58.2                6.9 +/-    0.95       7.9 +/-    0.95  0.080 / 0.260
G27     72.9           37.9                3.5 +/-    0.67       5.3 +/-    0.67  0.080 / 0.210
G28     227.7          16.6                4.0 +/-    1.84       9.6 +/-    1.84  0.040 / 0.060
G30     291.0          25.6                4.7 +/-    1.41       9.1 +/-    1.41  0.040 / 0.070