PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/28-04:28:00
G01     316.5          23.3                5.4 +/-    4.13      11.0 +/-    4.13  0.160 / 0.440
G10     89.5           49.2                6.8 +/-    0.95       8.6 +/-    0.95  0.120 / 0.310
G11     296.4          25.9                6.0 +/-    3.16      11.4 +/-    3.16  0.060 / 0.060
G14     312.2          70.5                5.9 +/-    0.80       6.2 +/-    0.80  0.050 / 0.070
G18     297.6          44.6                6.5 +/-    1.73       8.9 +/-    1.73  0.030 / 0.050
G20     103.2          44.4                9.2 +/-    1.71      12.5 +/-    1.71  0.030 / 0.070
G22     304.1          15.5                2.5 +/-    3.54       6.3 +/-    3.54  0.090 / 0.240
G25     95.0           11.3              -16.6 +/-   20.83     -45.0 +/-   20.83  0.160 / 0.240
G31     171.6          51.3                8.9 +/-    1.30      11.0 +/-    1.30  0.140 / 0.200
G32     22.0           61.3                6.9 +/-    0.53       7.8 +/-    0.53  0.130 / 0.150