PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/12-11:12:50
G01     48.9           24.4                2.5 +/-    0.46       4.9 +/-    0.46  0.040 / 0.070
G06     178.9          25.1                4.9 +/-    1.37       9.5 +/-    1.37  0.050 / 0.070
G11     44.0           12.5                1.6 +/-    2.21       4.2 +/-    2.21  0.020 / 0.030
G13     251.0          29.5                6.8 +/-    1.95      12.0 +/-    1.95  0.030 / 0.030
G15     282.9          15.6                5.0 +/-    1.76      12.2 +/-    1.76  0.110 / 0.320
G17     333.8          77.8                4.4 +/-    0.66       4.5 +/-    0.66  0.120 / 0.320
G19     251.1          63.1                3.9 +/-    0.84       4.3 +/-    0.84  0.150 / 0.170
G28     55.5           51.9                3.0 +/-    0.43       3.7 +/-    0.43  0.110 / 0.170
G30     150.3          40.5                5.6 +/-    0.55       8.1 +/-    0.55  0.050 / 0.090