PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/31-12:27:50
G01     41.9           17.6                2.2 +/-    0.92       5.1 +/-    0.92  0.160 / 0.370
G06     174.2          36.1                5.7 +/-    1.75       8.9 +/-    1.75  0.160 / 0.360
G13     239.0          24.7                3.8 +/-    1.33       7.5 +/-    1.33  0.080 / 0.150
G15     274.7          13.0                3.5 +/-    1.15       9.2 +/-    1.15  0.080 / 0.150
G17     343.9          74.5                3.1 +/-    0.54       3.3 +/-    0.54  0.030 / 0.070
G19     270.3          69.1                2.9 +/-    0.36       3.1 +/-    0.36  0.040 / 0.090
G24     317.6          15.5                1.1 +/-    2.18       2.8 +/-    2.18  0.060 / 0.080
G28     59.2           53.3                2.5 +/-    0.86       3.1 +/-    0.86  0.050 / 0.090
G30     154.0          31.7                5.4 +/-    0.59       9.1 +/-    0.59  0.080 / 0.210