PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/07-04:27:50
G01     108.3          24.7                5.8 +/-    0.87      11.4 +/-    0.87  0.030 / 0.040
G07     106.3          57.1                5.4 +/-    0.41       6.3 +/-    0.41  0.030 / 0.050
G08     41.6           19.0                2.1 +/-    0.85       4.8 +/-    0.85  0.030 / 0.020
G09     173.5          12.9                6.0 +/-    3.17      15.6 +/-    3.17  0.030 / 0.030
G11     88.3           42.5                5.5 +/-    0.55       7.6 +/-    0.55  0.050 / 0.090
G13     310.4          28.3                3.3 +/-    0.80       6.0 +/-    0.80  0.040 / 0.080
G17     204.1          39.1                6.8 +/-    1.30      10.0 +/-    1.30  0.070 / 0.160
G28     311.1          60.0                4.4 +/-    0.59       5.0 +/-    0.59  0.090 / 0.160
G30     10.6           76.9                4.4 +/-    0.30       4.5 +/-    0.30  0.040 / 0.070