PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/18-04:12:50
G01     224.2          15.0                4.1 +/-    5.24      10.3 +/-    5.24  0.280 / 0.390
G03     281.7          68.2                5.1 +/-    0.59       5.4 +/-    0.59  0.200 / 0.400
G09     297.5          14.0                4.2 +/-    1.72      10.7 +/-    1.72  0.110 / 0.210
G14     88.9           23.0                4.4 +/-    1.90       9.0 +/-    1.90  0.110 / 0.250
G16     141.5          48.6                6.5 +/-    0.74       8.4 +/-    0.74  0.040 / 0.090
G22     212.4          68.3                5.5 +/-    0.62       5.8 +/-    0.62  0.040 / 0.030
G23     309.1          38.7                3.4 +/-    1.10       5.1 +/-    1.10  0.050 / 0.080
G26     90.2           54.2                4.7 +/-    0.68       5.7 +/-    0.68  0.080 / 0.080
G31     46.6           29.1                3.4 +/-    2.14       6.1 +/-    2.14  0.040 / 0.060