PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/29-13:57:50
G01     91.8           31.4                7.0 +/-    0.43      12.0 +/-    0.43  0.030 / 0.040
G07     124.2          46.7                7.6 +/-    1.67      10.0 +/-    1.67  0.040 / 0.030
G11     69.4           39.8                6.7 +/-    0.65       9.8 +/-    0.65  0.100 / 0.110
G13     296.0          35.7                7.4 +/-    1.22      11.6 +/-    1.22  0.130 / 0.120
G17     213.3          52.7                8.8 +/-    1.19      10.7 +/-    1.19  0.040 / 0.080
G18     64.8           23.9                6.4 +/-    0.83      12.8 +/-    0.83  0.040 / 0.080
G19     214.2          22.8               10.0 +/-    1.39      20.5 +/-    1.39  0.040 / 0.070
G28     346.0          61.8                6.5 +/-    0.86       7.2 +/-    0.86  0.040 / 0.060
G30     95.7           78.1                7.4 +/-    0.88       7.6 +/-    0.88  0.040 / 0.050