PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/20-02:27:30
G08     316.8          14.5                8.3 +/-    0.99      20.9 +/-    0.99  0.060 / 0.080
G10     315.1          56.8               12.6 +/-    0.67      14.7 +/-    0.67  0.050 / 0.080
G14     214.1          19.9               17.3 +/-    4.38      38.2 +/-    4.38  0.150 / 0.420
G15     45.8           20.6                6.7 +/-    1.64      14.6 +/-    1.64  0.120 / 0.350
G20     337.2          63.3               10.5 +/-    0.65      11.6 +/-    0.65  0.040 / 0.050
G21     121.9          66.7               11.6 +/-    0.75      12.5 +/-    0.75  0.030 / 0.050
G24     83.6           29.2                9.6 +/-    0.90      17.2 +/-    0.90  0.040 / 0.040
G27     287.3          37.4               12.1 +/-    1.46      18.3 +/-    1.46  0.030 / 0.040
G32     216.0          44.9               16.8 +/-    0.61      22.7 +/-    0.61  0.060 / 0.110