PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/13-02:57:50
G01     106.8          25.7                7.6 +/-    1.23      14.6 +/-    1.23  0.040 / 0.060
G07     107.2          58.0                7.2 +/-    0.52       8.3 +/-    0.52  0.040 / 0.050
G08     42.0           20.8                2.9 +/-    1.64       6.3 +/-    1.64  0.030 / 0.040
G09     175.4          14.2                7.4 +/-    1.27      18.7 +/-    1.27  0.030 / 0.040
G11     90.7           42.8                6.4 +/-    0.62       8.9 +/-    0.62  0.060 / 0.160
G13     310.2          27.8                2.5 +/-    1.17       4.5 +/-    1.17  0.060 / 0.130
G17     206.1          38.1                5.8 +/-    0.85       8.7 +/-    0.85  0.050 / 0.070
G19     209.1          14.0                2.9 +/-    2.53       7.5 +/-    2.53  0.050 / 0.070
G28     319.9          61.2                3.8 +/-    0.50       4.3 +/-    0.50  0.110 / 0.280
G30     40.4           78.1                4.0 +/-    0.67       4.0 +/-    0.67  0.110 / 0.310