PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/07-01:42:40
G07     310.2          48.8                3.0 +/-    0.88       3.8 +/-    0.88  0.060 / 0.060
G08     122.9          42.0                5.4 +/-    0.91       7.7 +/-    0.91  0.050 / 0.050
G09     291.5          82.7                2.2 +/-    0.92       2.2 +/-    0.92  0.300 / 0.540
G16     42.2           23.7                1.3 +/-    2.01       2.6 +/-    2.01  0.190 / 0.450
G23     146.0          64.9                4.1 +/-    0.49       4.5 +/-    0.49  0.040 / 0.040
G27     80.8           38.1                4.3 +/-    0.91       6.4 +/-    0.91  0.030 / 0.030
G28     224.4          11.6               -2.9 +/-   14.25      -7.9 +/-   14.25  0.210 / 0.290
G30     286.1          21.5                3.1 +/-    2.83       6.6 +/-    2.83  0.170 / 0.290