PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/15-02:12:40
G01     122.0          15.8                7.6 +/-    1.79      18.6 +/-    1.79  0.030 / 0.050
G07     71.5           67.9                4.8 +/-    0.61       5.1 +/-    0.61  0.030 / 0.060
G08     46.9           35.1                4.2 +/-    0.52       6.7 +/-    0.52  0.040 / 0.070
G09     178.1          30.3                5.7 +/-    1.14      10.0 +/-    1.14  0.040 / 0.060
G11     113.0          38.0                6.9 +/-    1.09      10.3 +/-    1.09  0.050 / 0.160
G13     319.6          15.8                0.9 +/-    2.28       2.1 +/-    2.28  0.120 / 0.130
G17     201.1          21.1                5.9 +/-    1.05      12.5 +/-    1.05  0.030 / 0.040
G28     287.9          56.4                4.7 +/-    0.92       5.6 +/-    0.92  0.030 / 0.030
G30     347.7          67.9                2.5 +/-    0.39       2.7 +/-    0.39  0.080 / 0.100