PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/23-01:13:10
G07     332.8          58.2                2.3 +/-    0.45       2.7 +/-    0.45  0.030 / 0.040
G08     99.1           50.5                4.5 +/-    0.45       5.6 +/-    0.45  0.040 / 0.040
G09     188.8          75.1                4.0 +/-    0.33       4.1 +/-    0.33  0.140 / 0.380
G11     145.8          12.4                5.6 +/-    2.00      14.8 +/-    2.00  0.120 / 0.440
G16     46.0           10.3                1.9 +/-    2.01       5.4 +/-    2.01  0.040 / 0.040
G23     155.5          46.8                5.2 +/-    0.92       6.9 +/-    0.92  0.050 / 0.070
G27     60.2           34.9                3.5 +/-    0.91       5.6 +/-    0.91  0.160 / 0.270
G28     234.5          25.2                3.9 +/-    1.92       7.5 +/-    1.92  0.210 / 0.240
G30     299.1          32.2                3.1 +/-    2.54       5.2 +/-    2.54  0.030 / 0.060