PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/12-13:58:00
G01     96.3           29.3                9.5 +/-    0.93      16.9 +/-    0.93  0.030 / 0.050
G07     120.1          46.9                8.9 +/-    1.39      11.7 +/-    1.39  0.040 / 0.050
G08     41.8           14.9                7.0 +/-    2.36      17.5 +/-    2.36  0.060 / 0.060
G11     75.8           42.6                8.4 +/-    1.34      11.7 +/-    1.34  0.050 / 0.070
G13     300.6          34.7                7.5 +/-    0.62      11.9 +/-    0.62  0.040 / 0.050
G17     210.0          44.3                9.8 +/-    0.96      13.4 +/-    0.96  0.040 / 0.050
G18     69.2           24.4                7.8 +/-    1.47      15.4 +/-    1.47  0.040 / 0.060
G19     211.1          22.6                7.8 +/-    1.44      16.1 +/-    1.44  0.040 / 0.060
G28     323.7          60.6                7.8 +/-    0.72       8.9 +/-    0.72  0.130 / 0.220
G30     82.4           78.5                9.9 +/-    0.66      10.1 +/-    0.66  0.160 / 0.260