PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/31-02:13:10
G01     122.7          14.9                7.0 +/-    1.45      17.4 +/-    1.45  0.030 / 0.040
G07     74.4           66.5                4.4 +/-    0.63       4.8 +/-    0.63  0.040 / 0.040
G08     46.0           32.8                3.2 +/-    0.43       5.4 +/-    0.43  0.060 / 0.070
G09     176.3          29.3                6.5 +/-    2.08      11.6 +/-    2.08  0.060 / 0.060
G11     109.9          38.4                5.5 +/-    0.98       8.3 +/-    0.98  0.090 / 0.220
G13     319.3          16.4                1.6 +/-    1.99       3.8 +/-    1.99  0.080 / 0.210
G17     199.5          22.5                5.6 +/-    1.30      11.5 +/-    1.30  0.120 / 0.380
G18     94.7           18.8                5.4 +/-    1.12      12.3 +/-    1.12  0.100 / 0.310
G28     281.6          53.8                6.0 +/-    1.16       7.3 +/-    1.16  0.030 / 0.030
G30     337.5          64.1                2.5 +/-    0.62       2.7 +/-    0.62  0.040 / 0.030