PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/18-01:57:40
G01     228.0          18.9                8.0 +/-    1.43      18.1 +/-    1.43  0.040 / 0.040
G03     294.7          65.2                1.7 +/-    1.03       1.9 +/-    1.03  0.040 / 0.040
G09     294.0          10.5              -13.1 +/-   19.64     -36.1 +/-   19.64  0.140 / 0.340
G14     84.3           25.8                4.1 +/-    2.19       7.8 +/-    2.19  0.140 / 0.300
G16     147.3          43.0                6.1 +/-    0.89       8.4 +/-    0.89  0.100 / 0.200
G22     226.9          72.5                4.9 +/-    0.86       5.1 +/-    0.86  0.100 / 0.210
G23     304.7          34.3                5.4 +/-    0.72       8.8 +/-    0.72  0.050 / 0.080
G26     101.9          53.7                4.2 +/-    0.83       5.1 +/-    0.83  0.040 / 0.090
G31     44.3           34.9                2.7 +/-    1.10       4.3 +/-    1.10  0.050 / 0.110