PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/17-00:58:10
G07     351.2          63.5                4.0 +/-    0.95       4.4 +/-    0.95  0.050 / 0.120
G08     81.2           52.7                5.7 +/-    0.56       6.9 +/-    0.56  0.060 / 0.130
G09     184.2          62.7                9.0 +/-    1.70      10.0 +/-    1.70  0.040 / 0.050
G11     139.9          19.4                8.4 +/-    2.51      18.7 +/-    2.51  0.040 / 0.040
G23     158.4          30.3                7.7 +/-    1.21      13.5 +/-    1.21  0.040 / 0.050
G27     45.8           24.4                3.5 +/-    1.81       7.0 +/-    1.81  0.030 / 0.050
G28     247.4          38.5                6.3 +/-    1.95       9.3 +/-    1.95  0.030 / 0.030
G30     313.1          45.1                2.8 +/-    0.62       3.8 +/-    0.62  0.030 / 0.020