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               10.4 +/-    0.96      17.6 +/-    0.96  0.040 / 0.080
G07     127.0          39.7               10.7 +/-    0.85      15.7 +/-    0.85  0.030 / 0.070
G11     66.4           39.6                8.9 +/-    0.84      13.1 +/-    0.84  0.050 / 0.070
G13     292.4          37.4                9.8 +/-    1.06      14.9 +/-    1.06  0.050 / 0.060
G15     314.1          10.8               -1.9 +/-   26.72      -5.1 +/-   26.72  0.060 / 0.090
G17     214.6          52.9               13.2 +/-    1.48      16.1 +/-    1.48  0.070 / 0.100
G18     61.3           23.1                8.4 +/-    1.04      17.2 +/-    1.04  0.120 / 0.120
G19     214.3          29.2               10.6 +/-    1.45      18.8 +/-    1.45  0.110 / 0.130
G28     339.2          61.5                9.2 +/-    0.78      10.3 +/-    0.78  0.060 / 0.020
G30     112.2          72.6               11.1 +/-    0.85      11.6 +/-    0.85  0.060 / 0.030