PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/17-04:58:00
G03     228.4          64.8                6.3 +/-    1.03       6.9 +/-    1.03  0.080 / 0.250
G07     251.7          11.3               -1.9 +/-   17.58      -5.3 +/-   17.58  0.080 / 0.250
G09     308.4          27.3                4.1 +/-    2.12       7.5 +/-    2.12  0.130 / 0.370
G14     103.9          11.4                4.6 +/-    3.69      12.3 +/-    3.69  0.110 / 0.360
G16     110.8          62.2                7.3 +/-    0.47       8.1 +/-    0.47  0.040 / 0.060
G22     193.0          50.0                8.6 +/-    0.83      10.8 +/-    0.83  0.050 / 0.060
G23     322.9          52.9                5.3 +/-    0.63       6.5 +/-    0.63  0.040 / 0.040
G26     60.6           47.7                5.3 +/-    0.77       6.9 +/-    0.77  0.040 / 0.040
G31     55.5           14.9                3.7 +/-    2.65       9.3 +/-    2.65  0.050 / 0.040