PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/29-16:27:40
G01     76.5           33.3                8.6 +/-    1.39      14.1 +/-    1.39  0.130 / 0.190
G07     134.5          35.5               11.0 +/-    0.77      17.3 +/-    0.77  0.110 / 0.190
G11     57.2           33.8                8.3 +/-    2.04      13.5 +/-    2.04  0.030 / 0.030
G13     280.5          37.9               10.3 +/-    1.53      15.6 +/-    1.53  0.040 / 0.030
G15     308.2          13.1                9.2 +/-    1.89      24.1 +/-    1.89  0.060 / 0.070
G17     225.8          63.7               11.1 +/-    1.16      12.2 +/-    1.16  0.050 / 0.060
G18     52.9           20.3                8.5 +/-    7.17      18.6 +/-    7.17  0.030 / 0.050
G19     220.9          35.1               12.2 +/-    2.28      19.4 +/-    2.28  0.040 / 0.040
G28     10.9           60.3               11.0 +/-    1.39      12.5 +/-    1.39  0.100 / 0.140
G30     129.5          66.8               10.6 +/-    0.49      11.4 +/-    0.49  0.150 / 0.100