PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/25-14:58:10
G03     214.4          60.7               12.6 +/-    0.73      14.2 +/-    0.73  0.120 / 0.420
G07     253.8          12.2                7.8 +/-    1.97      20.6 +/-    1.97  0.110 / 0.610
G09     308.2          24.5                8.7 +/-    1.33      17.2 +/-    1.33  0.030 / 0.050
G14     105.6          11.9                8.4 +/-    2.91      22.4 +/-    2.91  0.030 / 0.070
G16     103.2          63.6               10.7 +/-    0.99      11.8 +/-    0.99  0.040 / 0.070
G22     184.9          42.0               12.9 +/-    2.02      18.2 +/-    2.02  0.040 / 0.050
G23     332.1          60.6                9.7 +/-    1.48      11.0 +/-    1.48  0.090 / 0.460
G26     56.1           44.7                8.8 +/-    0.86      11.8 +/-    0.86  0.110 / 0.390
G31     57.7           11.3                8.2 +/-    2.35      22.2 +/-    2.35  0.040 / 0.040