PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/14-11:12:40
G01     76.3           33.3                4.1 +/-    0.71       6.7 +/-    0.71  0.030 / 0.030
G07     134.6          34.6                5.8 +/-    1.18       9.2 +/-    1.18  0.030 / 0.030
G11     56.2           32.9                2.6 +/-    0.99       4.3 +/-    0.99  0.040 / 0.060
G13     280.0          38.1                3.0 +/-    0.75       4.5 +/-    0.75  0.040 / 0.070
G15     311.0          11.1                1.7 +/-    3.18       4.6 +/-    3.18  0.080 / 0.220
G17     226.2          66.5                6.5 +/-    1.28       7.0 +/-    1.28  0.080 / 0.180
G18     51.7           19.5                2.6 +/-    0.94       5.8 +/-    0.94  0.030 / 0.060
G28     9.4            60.5                3.0 +/-    0.62       3.4 +/-    0.62  0.040 / 0.070
G30     129.7          68.0                5.6 +/-    0.51       6.0 +/-    0.51  0.050 / 0.120