PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/09-02:27:50
G01     63.9           31.7                2.8 +/-    0.64       4.8 +/-    0.64  0.090 / 0.240
G06     182.6          10.1              -18.7 +/-   22.55     -52.1 +/-   22.55  0.090 / 0.210
G07     140.7          25.7                7.3 +/-    0.80      14.1 +/-    0.80  0.030 / 0.050
G11     51.3           28.3                1.3 +/-    1.21       2.4 +/-    1.21  0.030 / 0.060
G13     267.9          36.1                4.0 +/-    1.26       6.2 +/-    1.26  0.030 / 0.030
G15     296.4          16.6                2.6 +/-    1.56       6.2 +/-    1.56  0.030 / 0.030
G17     246.3          72.8                4.2 +/-    0.73       4.4 +/-    0.73  0.040 / 0.090
G19     229.5          48.1                4.4 +/-    1.22       5.7 +/-    1.22  0.060 / 0.090
G28     31.1           57.4                1.7 +/-    0.96       1.9 +/-    0.96  0.060 / 0.130
G30     140.3          51.4                6.4 +/-    0.86       7.9 +/-    0.86  0.060 / 0.130