PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/29-17:43:00
G01     43.4           19.4                8.3 +/-    2.75      18.6 +/-    2.75  0.090 / 0.220
G06     174.5          36.1               10.1 +/-    1.11      15.6 +/-    1.11  0.120 / 0.260
G13     241.2          24.7               10.6 +/-    1.13      20.9 +/-    1.13  0.060 / 0.090
G15     276.6          13.2               10.1 +/-    1.76      26.3 +/-    1.76  0.060 / 0.090
G17     348.3          73.9               10.3 +/-    0.89      10.6 +/-    0.89  0.250 / 0.260
G19     262.6          64.5               10.2 +/-    0.67      11.2 +/-    0.67  0.270 / 0.300
G24     317.4          16.7               10.2 +/-    3.26      24.3 +/-    3.26  0.030 / 0.030
G28     66.1           48.8               10.6 +/-    1.04      13.5 +/-    1.04  0.030 / 0.030
G30     153.6          32.1               10.2 +/-    1.49      17.1 +/-    1.49  0.050 / 0.040