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                3.3 +/-    0.65       3.9 +/-    0.65  0.050 / 0.040
G08     100.8          50.2                6.6 +/-    0.64       8.3 +/-    0.64  0.030 / 0.050
G09     190.0          76.1                3.9 +/-    0.81       4.0 +/-    0.81  0.150 / 0.270
G11     146.5          11.7                3.1 +/-    3.43       8.4 +/-    3.43  0.090 / 0.200
G16     45.6           11.0                2.9 +/-    2.02       8.0 +/-    2.02  0.140 / 0.420
G23     155.1          48.0                7.9 +/-    1.46      10.2 +/-    1.46  0.180 / 0.490
G27     61.3           35.3                4.3 +/-    0.66       6.7 +/-    0.66  0.050 / 0.070
G28     233.8          24.4                5.8 +/-    2.58      11.5 +/-    2.58  0.040 / 0.080
G30     298.2          31.5                3.7 +/-    1.18       6.2 +/-    1.18  0.090 / 0.130