PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/20-15:43:10
G01     87.9           31.6                9.6 +/-    1.41      16.2 +/-    1.41  0.060 / 0.050
G07     127.0          39.7               10.7 +/-    0.78      15.6 +/-    0.78  0.060 / 0.050
G11     66.4           39.6                9.1 +/-    1.07      13.3 +/-    1.07  0.070 / 0.100
G13     292.4          37.4               12.5 +/-    3.25      19.0 +/-    3.25  0.070 / 0.090
G15     314.1          10.8               -4.7 +/-   22.00     -13.0 +/-   22.00  0.040 / 0.070
G17     214.6          52.9               12.6 +/-    0.97      15.3 +/-    0.97  0.040 / 0.070
G18     61.3           23.1                8.5 +/-    1.07      17.3 +/-    1.07  0.070 / 0.110
G19     214.3          29.2               13.1 +/-    2.62      23.3 +/-    2.62  0.080 / 0.100
G28     339.2          61.5                9.5 +/-    0.85      10.7 +/-    0.85  0.070 / 0.030
G30     112.2          72.6               11.0 +/-    0.65      11.4 +/-    0.65  0.080 / 0.040