PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/07-08:12:50
G01     246.6          33.0                6.6 +/-    1.43      10.9 +/-    1.43  0.040 / 0.040
G03     315.0          47.4                3.4 +/-    0.98       4.4 +/-    0.98  0.040 / 0.040
G14     62.5           40.7                4.2 +/-    0.66       6.0 +/-    0.66  0.050 / 0.120
G18     218.0          24.3                5.5 +/-    1.14      10.9 +/-    1.14  0.050 / 0.100
G22     296.1          71.0                5.1 +/-    0.86       5.3 +/-    0.86  0.080 / 0.110
G23     290.5          23.3                5.6 +/-    1.53      11.3 +/-    1.53  0.080 / 0.120
G26     129.3          42.0                7.5 +/-    0.95      10.6 +/-    0.95  0.050 / 0.090
G31     41.0           51.8                4.3 +/-    0.72       5.3 +/-    0.72  0.060 / 0.070
G32     81.6           18.8                3.7 +/-    0.62       8.4 +/-    0.62  0.080 / 0.200