PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/25-02:57:40
G01     115.2          20.4                7.7 +/-    1.24      16.8 +/-    1.24  0.030 / 0.040
G07     93.9           61.9                4.9 +/-    0.80       5.5 +/-    0.80  0.030 / 0.030
G08     42.8           25.3                3.5 +/-    2.30       6.7 +/-    2.30  0.040 / 0.050
G09     175.1          20.4                5.5 +/-    2.37      11.9 +/-    2.37  0.040 / 0.050
G11     98.6           41.5                5.0 +/-    1.12       7.1 +/-    1.12  0.130 / 0.190
G13     315.3          23.2                2.9 +/-    1.23       5.9 +/-    1.23  0.140 / 0.250
G17     201.6          31.5                5.5 +/-    1.56       9.3 +/-    1.56  0.110 / 0.210
G18     85.8           21.7                5.3 +/-    2.11      11.3 +/-    2.11  0.150 / 0.180
G28     296.7          57.6                4.4 +/-    1.14       5.1 +/-    1.14  0.110 / 0.200
G30     351.4          71.4                4.2 +/-    0.32       4.4 +/-    0.32  0.100 / 0.180