PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/14-02:12:40
G01     61.2           30.9                3.6 +/-    0.63       6.2 +/-    0.63  0.060 / 0.050
G06     181.9          12.5                9.0 +/-    1.73      23.7 +/-    1.73  0.040 / 0.060
G07     141.9          23.4                4.9 +/-    1.47      10.0 +/-    1.47  0.030 / 0.030
G11     50.0           26.6                3.6 +/-    1.83       6.7 +/-    1.83  0.030 / 0.030
G13     264.7          35.4                6.3 +/-    1.50       9.9 +/-    1.50  0.120 / 0.300
G15     294.0          16.8                3.8 +/-    1.36       9.1 +/-    1.36  0.120 / 0.270
G17     253.4          74.4                6.7 +/-    0.79       7.0 +/-    0.79  0.050 / 0.080
G19     231.9          50.3                8.5 +/-    0.64      10.6 +/-    0.64  0.050 / 0.110
G28     35.3           56.6                3.4 +/-    0.75       4.0 +/-    0.75  0.060 / 0.130