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                3.9 +/-    1.29       6.6 +/-    1.29  0.040 / 0.050
G06     182.2          11.2              -12.9 +/-   25.63     -35.0 +/-   25.63  0.040 / 0.050
G07     141.2          24.7                4.6 +/-    1.32       9.1 +/-    1.32  0.030 / 0.030
G11     50.7           27.7                2.8 +/-    2.12       5.1 +/-    2.12  0.030 / 0.030
G13     266.5          35.8                5.4 +/-    1.78       8.5 +/-    1.78  0.160 / 0.260
G15     295.4          16.7                2.9 +/-    0.90       6.8 +/-    0.90  0.150 / 0.300
G17     249.1          73.5                4.7 +/-    0.55       4.9 +/-    0.55  0.070 / 0.070
G19     230.5          49.1                5.5 +/-    2.47       7.1 +/-    2.47  0.090 / 0.060
G28     32.9           57.1                3.5 +/-    0.97       4.1 +/-    0.97  0.110 / 0.250
G30     141.1          50.1                6.4 +/-    0.33       8.0 +/-    0.33  0.170 / 0.210