PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/14-08:57:30
G01     112.0          22.6                7.6 +/-    0.66      15.8 +/-    0.66  0.030 / 0.050
G07     99.1           60.4                7.2 +/-    0.40       8.1 +/-    0.40  0.040 / 0.040
G08     42.4           23.4                3.4 +/-    1.10       6.9 +/-    1.10  0.040 / 0.050
G09     175.1          17.6                5.7 +/-    2.57      13.3 +/-    2.57  0.030 / 0.050
G11     95.0           41.0                7.6 +/-    0.44      10.9 +/-    0.44  0.090 / 0.190
G13     314.5          23.5                3.1 +/-    2.12       6.2 +/-    2.12  0.060 / 0.200
G17     203.3          34.6                8.0 +/-    2.16      12.8 +/-    2.16  0.060 / 0.100
G28     308.6          60.0                6.8 +/-    0.74       7.7 +/-    0.74  0.080 / 0.090
G30     2.5            74.1                6.3 +/-    0.97       6.5 +/-    0.97  0.070 / 0.120