PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/28-02:28:10
G10     295.1          51.7                9.6 +/-    0.97      11.9 +/-    0.97  0.050 / 0.050
G15     46.4           29.4                5.5 +/-    0.91       9.8 +/-    0.91  0.050 / 0.040
G20     346.0          65.3                8.8 +/-    0.49       9.6 +/-    0.49  0.060 / 0.110
G21     86.3           75.6               10.5 +/-    0.57      10.8 +/-    0.57  0.060 / 0.080
G24     100.7          25.6                9.4 +/-    0.82      18.2 +/-    0.82  0.050 / 0.040
G27     304.0          32.7                9.3 +/-    1.60      15.5 +/-    1.60  0.050 / 0.040
G32     209.6          27.6               11.8 +/-    1.69      21.8 +/-    1.69  0.040 / 0.090