PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/11-11:58:00
G01     38.5           12.5                2.8 +/-    4.15       7.5 +/-    4.15  0.030 / 0.030
G06     172.4          43.5               10.0 +/-    1.25      13.8 +/-    1.25  0.030 / 0.040
G13     233.3          20.2                6.2 +/-    1.73      13.5 +/-    1.73  0.230 / 0.310
G15     268.5          10.8                3.7 +/-    2.62      10.2 +/-    2.62  0.350 / 0.270
G17     2.7            69.4                7.2 +/-    0.80       7.7 +/-    0.80  0.050 / 0.070
G19     292.5          71.9                6.1 +/-    0.68       6.4 +/-    0.68  0.060 / 0.070
G24     315.5          20.9                3.1 +/-    3.50       6.6 +/-    3.50  0.030 / 0.030
G28     69.0           50.5                6.5 +/-    0.61       8.2 +/-    0.61  0.030 / 0.040
G30     155.9          25.3                7.8 +/-    1.76      15.2 +/-    1.76  0.040 / 0.060