PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/14-19:58:00
G01     99.1           28.6               12.3 +/-    1.25      22.1 +/-    1.25  0.050 / 0.040
G07     118.7          46.5               12.8 +/-    0.93      16.9 +/-    0.93  0.030 / 0.050
G08     41.5           13.5                9.7 +/-    2.55      25.0 +/-    2.55  0.130 / 0.280
G11     77.2           42.1               12.5 +/-    0.82      17.6 +/-    0.82  0.120 / 0.310
G13     302.9          33.5               11.2 +/-    1.86      18.3 +/-    1.86  0.040 / 0.040
G17     208.2          46.0               13.6 +/-    0.40      18.1 +/-    0.40  0.040 / 0.040
G18     70.1           23.9               10.4 +/-    1.67      20.8 +/-    1.67  0.030 / 0.020
G19     210.7          19.6               10.2 +/-   17.06      22.6 +/-   17.06  0.030 / 0.030
G28     323.1          60.8               10.2 +/-    0.57      11.5 +/-    0.57  0.060 / 0.140
G30     71.0           79.1               11.6 +/-    0.63      11.8 +/-    0.63  0.070 / 0.130