PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/14-02:58:00
G07     336.2          59.0                4.2 +/-    0.67       4.8 +/-    0.67  0.100 / 0.150
G08     95.7           52.1                4.9 +/-    0.51       6.1 +/-    0.51  0.090 / 0.130
G09     190.6          72.4                7.2 +/-    0.74       7.5 +/-    0.74  0.030 / 0.030
G11     145.0          13.7                4.5 +/-    1.01      11.7 +/-    1.01  0.040 / 0.040
G23     156.3          40.8                6.2 +/-    0.73       9.0 +/-    0.73  0.030 / 0.020
G27     52.8           30.0                4.5 +/-    1.68       7.9 +/-    1.68  0.030 / 0.020
G28     239.0          31.6                6.1 +/-    1.62      10.4 +/-    1.62  0.030 / 0.040
G30     304.2          37.5                4.2 +/-    1.28       6.4 +/-    1.28  0.040 / 0.040