PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/12-00:57:40
G01     105.6          26.3                5.6 +/-    1.19      10.5 +/-    1.19  0.040 / 0.060
G07     108.9          57.3                6.5 +/-    0.49       7.5 +/-    0.49  0.040 / 0.070
G08     42.1           20.9                4.5 +/-    2.74       9.6 +/-    2.74  0.210 / 0.130
G09     175.3          13.3                7.7 +/-    1.43      20.1 +/-    1.43  0.140 / 0.120
G11     90.4           43.4                6.0 +/-    0.78       8.3 +/-    0.78  0.050 / 0.070
G13     309.1          28.8                5.4 +/-    0.72       9.7 +/-    0.72  0.050 / 0.080
G17     206.9          38.1                9.0 +/-    0.79      13.5 +/-    0.79  0.070 / 0.130
G19     209.5          14.7                8.0 +/-    1.86      20.0 +/-    1.86  0.070 / 0.110
G28     322.3          61.3                5.5 +/-    0.78       6.1 +/-    0.78  0.020 / 0.040
G30     54.7           78.0                7.0 +/-    0.92       7.2 +/-    0.92  0.020 / 0.040