PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/26-06:57:40
G01     245.3          32.3                5.1 +/-    1.20       8.6 +/-    1.20  0.040 / 0.040
G03     314.6          47.9                2.1 +/-    0.88       2.7 +/-    0.88  0.040 / 0.040
G14     64.3           39.3                2.7 +/-    0.52       4.0 +/-    0.52  0.050 / 0.090
G16     158.1          24.7               -4.1 +/-   14.36      -8.1 +/-   14.36  0.050 / 0.090
G18     217.0          23.3                5.0 +/-    0.73      10.2 +/-    0.73  0.060 / 0.080
G22     294.8          70.9                4.5 +/-    1.07       4.7 +/-    1.07  0.060 / 0.070
G23     291.0          23.3                3.3 +/-    1.88       6.7 +/-    1.88  0.090 / 0.220
G26     127.9          42.9                5.1 +/-    0.86       7.1 +/-    0.86  0.100 / 0.240
G31     40.9           50.6                1.5 +/-    0.88       1.9 +/-    0.88  0.090 / 0.130
G32     82.6           18.0                2.3 +/-    0.66       5.3 +/-    0.66  0.090 / 0.120