PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/17-12:43:00
G01     247.0          34.1                8.3 +/-    2.07      13.4 +/-    2.07  0.120 / 0.110
G03     315.2          52.1                5.3 +/-    1.43       6.5 +/-    1.43  0.090 / 0.120
G14     63.4           38.5                3.7 +/-    2.03       5.6 +/-    2.03  0.090 / 0.150
G16     164.3          18.5               -0.7 +/-   13.52      -1.6 +/-   13.52  0.140 / 0.130
G18     216.4          24.3                4.7 +/-    3.62       9.4 +/-    3.62  0.050 / 0.080
G22     293.8          73.6                7.4 +/-    0.83       7.7 +/-    0.83  0.050 / 0.060
G23     288.8          21.3                5.3 +/-    2.40      11.2 +/-    2.40  0.060 / 0.130
G26     137.1          39.5                7.5 +/-    1.52      11.0 +/-    1.52  0.060 / 0.120
G31     40.9           56.4                4.7 +/-    1.84       5.5 +/-    1.84  0.030 / 0.030
G32     76.7           26.1                4.2 +/-    1.88       7.9 +/-    1.88  0.040 / 0.030