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                8.9 +/-    0.67       9.5 +/-    0.67  0.170 / 0.180
G08     68.9           50.8                8.7 +/-    0.65      10.9 +/-    0.65  0.150 / 0.110
G09     181.6          53.7                9.7 +/-    0.67      11.7 +/-    0.67  0.160 / 0.120
G11     134.7          24.8               14.1 +/-    3.01      27.7 +/-    3.01  0.330 / 0.160
G23     159.4          21.2                9.9 +/-    1.66      21.1 +/-    1.66  0.050 / 0.050
G27     41.3           18.5                7.0 +/-    2.57      16.0 +/-    2.57  0.040 / 0.050
G28     256.3          44.3                8.2 +/-    4.15      11.1 +/-    4.15  0.030 / 0.030
G30     321.9          52.1                7.2 +/-    0.75       8.8 +/-    0.75  0.030 / 0.030