PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/04-15:12:50
G01     105.6          26.3                9.1 +/-    1.20      17.3 +/-    1.20  0.080 / 0.130
G07     109.0          57.3               10.5 +/-    0.35      12.2 +/-    0.35  0.090 / 0.140
G08     41.8           19.2                8.0 +/-    1.71      18.0 +/-    1.71  0.060 / 0.140
G09     173.8          11.4                9.8 +/-    4.59      26.4 +/-    4.59  0.090 / 0.150
G11     86.7           42.7                9.7 +/-    0.99      13.5 +/-    0.99  0.030 / 0.030
G13     308.4          29.6               10.0 +/-    1.54      17.7 +/-    1.54  0.030 / 0.040
G17     206.6          38.6               11.7 +/-    0.84      17.5 +/-    0.84  0.080 / 0.080
G18     78.7           24.4               10.3 +/-    1.25      20.4 +/-    1.25  0.070 / 0.080
G28     320.6          61.2                8.7 +/-    0.99       9.8 +/-    0.99  0.250 / 0.430
G30     27.6           78.7               10.7 +/-    0.73      10.9 +/-    0.73  0.260 / 0.640