PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/09-14:12:50
G01     122.0          15.7               10.0 +/-    0.82      24.4 +/-    0.82  0.030 / 0.030
G07     71.2           68.1                8.9 +/-    0.82       9.6 +/-    0.82  0.040 / 0.030
G08     46.4           34.3                8.3 +/-    0.67      13.4 +/-    0.67  0.080 / 0.200
G09     176.4          28.2               11.8 +/-    1.38      21.4 +/-    1.38  0.100 / 0.230
G11     110.7          38.5               11.1 +/-    0.72      16.6 +/-    0.72  0.040 / 0.110
G13     319.1          16.8                7.6 +/-    1.79      18.2 +/-    1.79  0.050 / 0.080
G17     201.1          20.7               10.4 +/-    1.30      22.4 +/-    1.30  0.020 / 0.040
G18     97.6           19.5                9.6 +/-    1.18      21.3 +/-    1.18  0.020 / 0.030
G28     286.5          55.9                9.1 +/-    0.79      10.7 +/-    0.79  0.040 / 0.070
G30     340.1          65.3                8.4 +/-    0.64       9.2 +/-    0.64  0.040 / 0.060