PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/19-02:28:00
G08     298.1          21.6                8.9 +/-    1.19      18.9 +/-    1.19  0.060 / 0.080
G10     7.4            62.7                9.2 +/-    1.07      10.2 +/-    1.07  0.040 / 0.080
G14     227.8          44.3               13.3 +/-    2.59      18.2 +/-    2.59  0.080 / 0.110
G20     62.7           53.4               10.5 +/-    0.88      12.7 +/-    0.88  0.090 / 0.100
G21     146.0          42.7               12.2 +/-    0.77      16.9 +/-    0.77  0.050 / 0.100
G24     58.0           26.5                8.4 +/-    1.29      15.8 +/-    1.29  0.060 / 0.100
G27     256.8          32.8               10.9 +/-    3.30      18.0 +/-    3.30  0.030 / 0.030
G32     241.2          65.2               10.8 +/-    0.86      11.8 +/-    0.86  0.030 / 0.030