PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/30-20:13:10
G02     358.5          74.7                6.6 +/-    0.59       6.9 +/-    0.59  0.080 / 0.130
G05     161.1          39.2               10.0 +/-    0.74      14.7 +/-    0.74  0.080 / 0.120
G06     42.7           35.4                6.8 +/-    0.98      10.7 +/-    0.98  0.040 / 0.030
G12     302.3          74.3                6.3 +/-    0.67       6.5 +/-    0.67  0.040 / 0.030
G17     89.2           9.8                 9.1 +/-    2.26      25.4 +/-    2.26  0.140 / 0.330
G19     80.2           22.7                7.9 +/-    2.17      16.3 +/-    2.17  0.120 / 0.320
G24     224.4          18.8               16.4 +/-    4.67      37.1 +/-    4.67  0.150 / 0.280
G25     315.9          33.2                4.5 +/-    1.47       7.4 +/-    1.47  0.110 / 0.270
G29     290.3          13.2                9.1 +/-    2.64      23.7 +/-    2.64  0.070 / 0.150