PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/27-12:12:50
G01     52.2           26.5                3.2 +/-    2.07       6.1 +/-    2.07  0.160 / 0.390
G06     177.4          21.7                3.3 +/-    2.44       7.0 +/-    2.44  0.160 / 0.250
G07     144.3          13.8                3.8 +/-    1.93       9.8 +/-    1.93  0.030 / 0.020
G11     45.7           19.5                3.1 +/-    1.61       7.0 +/-    1.61  0.030 / 0.020
G13     253.1          33.2                5.2 +/-    1.78       8.5 +/-    1.78  0.050 / 0.060
G15     288.1          15.8                4.2 +/-    1.42      10.3 +/-    1.42  0.040 / 0.060
G17     277.5          77.4                5.3 +/-    0.42       5.4 +/-    0.42  0.160 / 0.230
G19     240.6          58.7                4.4 +/-    2.31       5.0 +/-    2.31  0.180 / 0.230
G28     35.9           58.1                4.7 +/-    0.98       5.4 +/-    0.98  0.110 / 0.220
G30     148.2          46.1                5.7 +/-    0.86       7.5 +/-    0.86  0.100 / 0.210