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               11.7 +/-    1.62      23.5 +/-    1.62  0.130 / 0.170
G07     101.9          60.5               10.9 +/-    0.55      12.3 +/-    0.55  0.080 / 0.170
G08     42.2           22.7                7.1 +/-    1.67      14.7 +/-    1.67  0.030 / 0.020
G09     174.5          15.2               10.6 +/-    1.42      26.3 +/-    1.42  0.020 / 0.030
G11     92.6           42.5               10.8 +/-    1.03      15.1 +/-    1.03  0.030 / 0.030
G13     311.7          26.9                8.5 +/-    1.17      15.9 +/-    1.17  0.040 / 0.030
G17     204.8          34.4               12.0 +/-    1.28      19.2 +/-    1.28  0.100 / 0.120
G18     83.4           23.7                8.1 +/-    2.32      16.3 +/-    2.32  0.080 / 0.140
G28     311.8          60.4                8.8 +/-    0.96      10.0 +/-    0.96  0.100 / 0.150
G30     9.0            76.1               10.3 +/-    0.84      10.6 +/-    0.84  0.080 / 0.150