PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/13-15:43:10
G01     69.1           32.7                9.5 +/-    1.21      15.8 +/-    1.21  0.030 / 0.030
G07     138.2          29.8               11.7 +/-    1.27      20.5 +/-    1.27  0.030 / 0.040
G11     52.5           29.4                9.5 +/-    1.53      16.9 +/-    1.53  0.080 / 0.090
G13     272.4          37.4                9.0 +/-    1.92      13.7 +/-    1.92  0.060 / 0.080
G15     303.4          14.3                6.6 +/-    1.38      16.7 +/-    1.38  0.040 / 0.090
G17     236.0          70.0               11.9 +/-    0.43      12.6 +/-    0.43  0.070 / 0.120
G18     47.8           17.3                9.3 +/-    2.42      21.8 +/-    2.42  0.120 / 0.230
G19     225.1          40.5               12.3 +/-    1.53      17.8 +/-    1.53  0.130 / 0.240
G28     21.9           59.0               11.7 +/-    1.36      13.4 +/-    1.36  0.060 / 0.080
G30     137.1          61.2               11.8 +/-    0.58      13.3 +/-    0.58  0.050 / 0.070