PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/26-17:12:30
G02     223.7          65.4                9.8 +/-    0.85      10.7 +/-    0.85  0.120 / 0.360
G06     46.0           67.5                8.5 +/-    0.66       9.1 +/-    0.66  0.170 / 0.250
G12     319.7          41.3                8.5 +/-    0.85      12.2 +/-    0.85  0.070 / 0.100
G17     60.8           30.7                7.4 +/-    1.06      12.7 +/-    1.06  0.100 / 0.090
G19     48.0           43.4                7.2 +/-    1.06      10.0 +/-    1.06  0.060 / 0.080
G24     256.9          39.1               11.4 +/-    3.05      16.8 +/-    3.05  0.050 / 0.080
G28     125.5          13.9                9.1 +/-    1.85      23.2 +/-    1.85  0.050 / 0.050