PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/19-02:58:10
G01     124.2          13.7                5.2 +/-    2.30      13.3 +/-    2.30  0.030 / 0.030
G07     68.9           67.4                5.9 +/-    0.48       6.3 +/-    0.48  0.030 / 0.040
G08     46.9           34.3                3.2 +/-    0.38       5.2 +/-    0.38  0.060 / 0.070
G09     176.2          30.8                6.7 +/-    1.03      11.5 +/-    1.03  0.050 / 0.080
G11     112.2          37.6               -1.1 +/-    1.08      -1.6 +/-    1.08  0.120 / 0.310
G13     319.9          14.9                1.7 +/-    1.50       4.2 +/-    1.50  0.110 / 0.310
G17     199.2          20.7                7.5 +/-    1.13      16.2 +/-    1.13  0.100 / 0.380
G18     96.9           18.1                6.5 +/-    1.07      15.1 +/-    1.07  0.110 / 0.420
G28     278.9          53.1                6.5 +/-    1.04       7.9 +/-    1.04  0.030 / 0.040
G30     335.0          62.4                3.8 +/-    0.66       4.2 +/-    0.66  0.040 / 0.040