PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/30-02:57:30
G01     129.2          10.0              -13.9 +/-   23.83     -38.8 +/-   23.83  0.230 / 0.320
G07     44.7           69.5                5.5 +/-    0.31       5.9 +/-    0.31  0.160 / 0.370
G08     52.9           41.9                3.8 +/-    1.13       5.4 +/-    1.13  0.070 / 0.110
G09     179.1          39.8                7.5 +/-    1.18      11.0 +/-    1.18  0.050 / 0.120
G11     122.3          32.9                5.6 +/-    1.60       9.3 +/-    1.60  0.060 / 0.040
G17     199.6          12.7                3.3 +/-    3.66       8.6 +/-    3.66  0.050 / 0.050
G23     160.7          10.5                5.9 +/-    2.16      16.2 +/-    2.16  0.100 / 0.350
G28     273.0          52.0                5.9 +/-    2.60       7.3 +/-    2.60  0.100 / 0.430
G30     333.1          60.0                3.8 +/-    0.48       4.3 +/-    0.48  0.250 / 0.290