PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/23-02:43:10
G01     123.7          14.1                5.7 +/-    2.15      14.6 +/-    2.15  0.040 / 0.030
G07     70.8           67.1                3.7 +/-    0.37       4.0 +/-    0.37  0.040 / 0.030
G08     46.6           33.8                2.0 +/-    1.45       3.3 +/-    1.45  0.090 / 0.190
G09     176.3          30.3                5.2 +/-    1.71       9.0 +/-    1.71  0.080 / 0.200
G11     111.4          37.9                4.6 +/-    0.89       6.9 +/-    0.89  0.170 / 0.230
G13     319.7          15.4                2.5 +/-    2.47       6.1 +/-    2.47  0.170 / 0.210
G17     199.3          21.3                5.2 +/-    1.18      11.1 +/-    1.18  0.130 / 0.080
G18     96.1           18.3                4.7 +/-    1.68      10.8 +/-    1.68  0.080 / 0.090
G28     279.8          53.3                2.3 +/-    2.90       2.8 +/-    2.90  0.150 / 0.340
G30     335.8          63.0                1.8 +/-    0.36       2.0 +/-    0.36  0.130 / 0.320