PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/15-17:58:30
G02     224.3          66.3               10.6 +/-    0.91      11.4 +/-    0.91  0.160 / 0.290
G06     45.6           67.4                9.5 +/-    0.51      10.2 +/-    0.51  0.110 / 0.350
G12     319.7          41.4                9.4 +/-    0.75      13.4 +/-    0.75  0.040 / 0.050
G17     61.5           30.0                9.7 +/-    1.86      17.0 +/-    1.86  0.050 / 0.050
G19     48.4           43.2                9.0 +/-    0.69      12.5 +/-    0.69  0.060 / 0.120
G24     256.2          39.0               11.1 +/-    2.49      16.5 +/-    2.49  0.070 / 0.120
G28     125.8          13.3                9.3 +/-    1.18      24.1 +/-    1.18  0.050 / 0.080