PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/13-02:13:10
G01     62.7           31.4                3.6 +/-    0.53       6.1 +/-    0.53  0.290 / 0.350
G06     182.2          11.2               -7.8 +/-   33.98     -21.3 +/-   33.98  0.210 / 0.410
G07     141.2          24.7                5.7 +/-    1.29      11.1 +/-    1.29  0.040 / 0.060
G11     50.7           27.7                1.8 +/-    0.83       3.3 +/-    0.83  0.040 / 0.070
G13     266.5          35.8                4.8 +/-    1.30       7.5 +/-    1.30  0.030 / 0.030
G15     295.4          16.7                1.8 +/-    1.55       4.3 +/-    1.55  0.030 / 0.030
G17     249.1          73.5                5.4 +/-    0.52       5.6 +/-    0.52  0.060 / 0.090
G19     230.5          49.1                5.6 +/-    0.87       7.1 +/-    0.87  0.050 / 0.090
G28     32.9           57.1                3.2 +/-    0.45       3.8 +/-    0.45  0.080 / 0.160
G30     141.1          50.1                6.1 +/-    0.86       7.7 +/-    0.86  0.090 / 0.130