PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/06-15:43:00
G01     85.8           32.6                9.3 +/-    0.52      15.5 +/-    0.52  0.030 / 0.040
G07     128.8          42.4               11.1 +/-    1.37      15.5 +/-    1.37  0.030 / 0.040
G11     64.3           38.0                7.6 +/-    0.62      11.5 +/-    0.62  0.070 / 0.110
G13     290.1          37.1               10.1 +/-    1.07      15.5 +/-    1.07  0.080 / 0.090
G15     314.3          10.2              -10.0 +/-   13.98     -27.7 +/-   13.98  0.050 / 0.060
G17     217.6          56.6               12.0 +/-    0.57      14.1 +/-    0.57  0.060 / 0.060
G18     59.9           22.9                8.3 +/-    0.73      17.1 +/-    0.73  0.040 / 0.060
G19     216.6          28.0               12.3 +/-    2.26      22.4 +/-    2.26  0.030 / 0.060
G28     356.3          61.4                9.4 +/-    0.81      10.5 +/-    0.81  0.070 / 0.110
G30     114.5          73.8               10.7 +/-    1.37      11.1 +/-    1.37  0.070 / 0.110