PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/13-15:27:50
G01     319.1          17.7                4.3 +/-    1.70      10.1 +/-    1.70  0.150 / 0.360
G08     259.9          13.2                6.8 +/-    1.19      17.8 +/-    1.19  0.140 / 0.350
G10     79.1           53.7                5.8 +/-    0.36       7.0 +/-    0.36  0.060 / 0.060
G11     305.4          21.2                4.8 +/-    2.12      10.2 +/-    2.12  0.050 / 0.050
G14     292.8          69.7                6.5 +/-    0.59       6.9 +/-    0.59  0.040 / 0.050
G22     300.8          11.5                4.9 +/-    5.61      13.2 +/-    5.61  0.040 / 0.050
G31     175.7          42.3                9.8 +/-    1.08      13.8 +/-    1.08  0.030 / 0.040
G32     8.5            67.2                5.3 +/-    0.70       5.7 +/-    0.70  0.030 / 0.030