PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/19-01:28:00
G07     331.0          57.6                4.3 +/-    0.48       5.0 +/-    0.48  0.030 / 0.040
G08     100.8          50.2                6.4 +/-    0.34       8.1 +/-    0.34  0.040 / 0.040
G09     190.0          76.1                6.0 +/-    0.53       6.2 +/-    0.53  0.170 / 0.300
G11     146.5          11.7                3.5 +/-    7.96       9.4 +/-    7.96  0.160 / 0.310
G16     45.6           11.0                2.8 +/-    1.88       7.8 +/-    1.88  0.140 / 0.380
G23     155.1          48.0                7.2 +/-    0.63       9.3 +/-    0.63  0.130 / 0.350
G27     61.3           35.3                4.9 +/-    0.85       7.7 +/-    0.85  0.050 / 0.060
G28     233.8          24.4                5.5 +/-    2.20      10.8 +/-    2.20  0.040 / 0.050
G30     298.2          31.5                4.5 +/-    1.90       7.6 +/-    1.90  0.220 / 0.130