PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/13-05:12:50
G01     42.8           18.5                2.8 +/-    1.30       6.3 +/-    1.30  0.040 / 0.080
G06     178.7          32.8                6.2 +/-    1.93      10.3 +/-    1.93  0.040 / 0.080
G13     241.3          24.0                3.3 +/-    1.18       6.6 +/-    1.18  0.160 / 0.440
G15     272.8          13.5                3.8 +/-    1.36       9.9 +/-    1.36  0.190 / 0.400
G17     354.8          72.6                5.7 +/-    0.46       6.0 +/-    0.46  0.090 / 0.170
G19     271.3          68.4                5.1 +/-    0.53       5.4 +/-    0.53  0.070 / 0.170
G24     317.8          15.9                2.1 +/-    2.23       5.1 +/-    2.23  0.020 / 0.030
G28     68.6           47.7                4.2 +/-    0.36       5.4 +/-    0.36  0.040 / 0.030
G30     152.9          27.8                8.0 +/-    0.99      14.7 +/-    0.99  0.050 / 0.100