PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/08-23:42:40
G07     8.4            67.1                7.6 +/-    0.82       8.2 +/-    0.82  0.040 / 0.060
G08     68.9           50.8                8.6 +/-    0.45      10.7 +/-    0.45  0.040 / 0.060
G09     181.6          53.7                6.6 +/-    2.57       8.0 +/-    2.57  0.050 / 0.120
G11     134.7          24.8               11.5 +/-    1.78      22.6 +/-    1.78  0.050 / 0.110
G23     159.4          21.2               11.0 +/-    2.20      23.4 +/-    2.20  0.090 / 0.090
G27     41.3           18.5                6.1 +/-    0.79      14.0 +/-    0.79  0.080 / 0.120
G28     256.3          44.3                5.8 +/-    1.78       8.0 +/-    1.78  0.070 / 0.180
G30     321.9          52.1                8.1 +/-    1.06      10.0 +/-    1.06  0.080 / 0.210