PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/30-00:12:30
G07     313.0          50.3                5.8 +/-    0.66       7.3 +/-    0.66  0.060 / 0.060
G08     120.7          43.3                7.6 +/-    0.69      10.4 +/-    0.69  0.050 / 0.070
G09     283.1          83.0                8.5 +/-    0.33       8.5 +/-    0.33  0.060 / 0.050
G16     42.4           22.9                2.9 +/-    1.74       5.9 +/-    1.74  0.040 / 0.040
G23     147.6          62.9                6.5 +/-    0.47       7.2 +/-    0.47  0.260 / 0.350
G27     78.8           38.3                6.0 +/-    0.81       8.9 +/-    0.81  0.100 / 0.340
G28     225.3          12.9                7.7 +/-    2.31      20.1 +/-    2.31  0.030 / 0.040
G30     287.6          22.9                5.7 +/-    1.45      11.7 +/-    1.45  0.030 / 0.040