PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/31-04:27:50
G01     246.5          33.1                5.6 +/-    1.09       9.2 +/-    1.09  0.040 / 0.040
G03     315.2          45.5                1.9 +/-    1.20       2.6 +/-    1.20  0.030 / 0.040
G14     64.0           38.9                2.8 +/-    1.14       4.2 +/-    1.14  0.080 / 0.120
G16     158.3          23.7               -9.5 +/-    8.67     -19.1 +/-    8.67  0.070 / 0.110
G18     217.3          24.1                6.0 +/-    0.99      12.0 +/-    0.99  0.040 / 0.080
G22     299.5          67.9                4.5 +/-    0.75       4.8 +/-    0.75  0.040 / 0.090
G23     289.3          20.9                4.2 +/-    1.62       9.1 +/-    1.62  0.060 / 0.220
G26     129.1          42.0                4.9 +/-    1.10       7.0 +/-    1.10  0.070 / 0.270
G31     41.0           51.9                2.5 +/-    0.42       3.1 +/-    0.42  0.090 / 0.200
G32     81.6           18.8                2.9 +/-    1.01       6.6 +/-    1.01  0.090 / 0.190