PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/09-14:42:50
G01     110.0          24.0               10.0 +/-    1.88      20.1 +/-    1.88  0.020 / 0.030
G07     101.9          60.5               10.6 +/-    1.26      11.9 +/-    1.26  0.030 / 0.030
G08     42.2           22.7                7.3 +/-    0.99      15.0 +/-    0.99  0.080 / 0.160
G09     174.5          15.2               13.3 +/-    2.63      33.0 +/-    2.63  0.070 / 0.160
G11     92.6           42.5               11.3 +/-    0.33      15.8 +/-    0.33  0.040 / 0.120
G13     311.7          26.9                8.9 +/-    0.93      16.8 +/-    0.93  0.040 / 0.100
G17     204.8          34.4               11.8 +/-    1.23      18.9 +/-    1.23  0.030 / 0.030
G18     83.4           23.7                9.1 +/-    0.64      18.3 +/-    0.64  0.030 / 0.040
G28     311.8          60.4                9.5 +/-    0.94      10.8 +/-    0.94  0.050 / 0.060
G30     9.0            76.1               10.7 +/-    0.46      11.0 +/-    0.46  0.040 / 0.060