PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/31-06:27:50
G01     121.3          16.1                4.2 +/-    1.40      10.2 +/-    1.40  0.040 / 0.040
G07     76.7           66.6                2.6 +/-    0.88       2.8 +/-    0.88  0.030 / 0.040
G08     45.2           31.3                1.8 +/-    1.21       3.0 +/-    1.21  0.030 / 0.030
G09     174.3          24.8                5.2 +/-    1.61      10.1 +/-    1.61  0.030 / 0.040
G11     107.9          39.1                5.7 +/-    1.20       8.4 +/-    1.20  0.160 / 0.280
G13     318.6          17.8                1.4 +/-    1.82       3.4 +/-    1.82  0.110 / 0.220
G17     200.1          24.1                2.2 +/-    1.57       4.4 +/-    1.57  0.080 / 0.150
G18     94.5           19.7                4.9 +/-    0.84      11.0 +/-    0.84  0.080 / 0.200
G28     285.9          55.4                3.5 +/-    0.86       4.1 +/-    0.86  0.110 / 0.210
G30     339.2          65.3                1.1 +/-    0.86       1.2 +/-    0.86  0.110 / 0.250