PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/13-01:13:10
G02     202.1          32.7                8.8 +/-    1.64      14.6 +/-    1.64  0.160 / 0.060
G06     171.9          62.3                9.6 +/-    1.08      10.7 +/-    1.08  0.080 / 0.080
G12     304.9          11.1               -4.6 +/-   13.04     -12.5 +/-   13.04  0.040 / 0.030
G17     35.1           49.7                5.9 +/-    1.05       7.4 +/-    1.05  0.060 / 0.040
G19     353.8          67.0                6.4 +/-    0.96       6.9 +/-    0.96  0.160 / 0.230
G24     298.8          38.2                6.3 +/-    2.64       9.5 +/-    2.64  0.060 / 0.090
G28     97.7           36.1                8.0 +/-    0.75      12.5 +/-    0.75  0.050 / 0.070